ColorStar 3000 Manual 2 - Tripping Through The Dark
Contents
1. and correct them if necessary with the and Y keys Then press LAMP ZEND Next improve the calibration as follows CALIBRATION WITH THE GREY TEST NEGATIVE Use this procedure whenever you change paper and also as a daily check on the condition of your chemicals This enables the analyser to correct for these changes ensuring constant print quality 1 Make a test print as cutlined in par 14 steps 1 to 6 YOu can use the analyser as a densitometer to measure the testorint see par 13 and also steps a to d of par 14 The print should become neutral grey This is sufficiently accurate if the LogY LogM and LogC values are approx 0 55 and equal to each other within 0 02 if this is not the case you should correct the Y M D values of channel 1 Using the reprogram function see par 14 steps Aj to C Now make a new testprint starting with step 1 above to check the new calibration if necessary improve the calibration again with the reprogram function After calibrating channel 1 you can use this to install some other channels GY b To calibrate channel 4 for semisntegrated measunng o Dostep 1 to 4 of par 14 again e Replace the spot measuring device wit the white probe diffuser e Select channel 4 e Do the Autoprogram function ANALYSE sk Y A 5 0 seconds LAMP To calibrate channels 2 and 5 for warm tone instead of neutral e Insert almost the same values of channels 1 and 42. G BLACK AND WHITE SELECTED Press the key 5 times to check the paper type setting at black white setting b 00 the star will not fight up H NEG POS INTERCHANGED Press the key 5 times to check the paper type setting n 00 for color negatives or P 30 for transparencies 1 PROBE NOT CONNECTING Pull the probe cord plug out and push it in the sensor connector again J PROBE WIRES BROKEN Have the probe cord and plug checked for broken wires Or try another proba if available K WHITE LIGHT SELECTED Check if the white light switch of the enlarger is in filter position TX480 17 L Y M VALUES OUT OF RANGE Press the key 2 and 3 times and check the Y and M channel values Start with Y 500 and M 550 The total range is 0 999 Values below approx 400 and above 750 can probably not be nulled by your enlarger filters M D VALUE OUT OF RANGE Press the key 4 times and check the D Density channel value Adjust D in between 500 and 550 for your first test The total range is 0 999 Values below approx 300 will result in 0 0 exposure time Values above approx 800 will result in more than 999 seconds displaying O FL Overflow N NOT ENOUGH LIGHT This signal alerts that the amount of light on the probe is insufficient for accurate measuring Open the lens wider or choose another measuring method 0 PAPER CALIBRATION FAILURE 1 Fill out the form Setting up your C
3. key ance more to dispiay the Master reprogram indication a r indicating all channel reprogram Then press the Up and DOWN keys tagether and confirm with the LAMP END key before removing the probe This procedure reprograms the Master A values PART 2 BLACK AND WHITE ENLARGING 18 SELECTING BLACK AND WHITE You may use the standard color probe also for black and white measuring It is however advisable ta use the optional spat probe item No 601 especially for variable contrast paper in noth cases the analyser must first be set up for black and white a Press the key 10 while switching the instrument on with the power switch 3 Now use the DOWN key 7 to display etter b and the Up key 6 to display figures OO c End with the LAMP END key 4 cr The Color Star 12 will not light up nove during analysis Pressing the key 10 several times will now display the following o The channel number ch 1 to ch 8 o The D Density value of this channel o The paper type indication b 0D o The Master Density value ASO 19 CALIBRATING WITH A KNOWN NEGATIVE AUTOPROGRAM If you have a negative for which the right expusure time on your paper is already known you may use this to calibrate the analyser quickly a insert the negative in the enlarger and adjust aperture and enlarger height b Only for variable contrast paper Select white light if you use the co cr probe or the
4. see step by step instr Do you get a neutral grey print No Yes _ Calibrate channels 4 and 5 for semuntegrated measuring grey and warm with Autoprogram see step by step instructions Do you get good prints of your own negatives using one of these channels _ Yes CONGRATULATIONS AA E 16 rx480 15 ESPINA Fa s AR EES ter A PE ERRE RP IERETE RI RIE iE Bi A ERA y Py A TA PROMO EE ak Stay E OTE EE SE TAAA pone ote r N A gt fo ek 0 E DNR Ry ORB o crn te creates e Fs E gt ce Stet Seo PE rai ee SS Fo e gt a p 4 244 a TETA t 3 E ony e prav er a mn s 28 TROUBLE SHOOTING PROCEDURES A NO POWER x the correct mains voltage is pe ee NG ee e B3 BROKEN FUSE 100 mA ements Su os a ru ise E heck fuse 1181 and replace if broken C BROKEN FUSE 6 3 A SLOW Sheck fuse 17 and replace if broken D POWER CORD FAILURE Check the power cord and mains plug for sose connections or broken wires E ENLARGER CORD FAILURE Check the enlarger cord and socket or plug for loose connections or broken wires The power and enlarger cords are combined in several versions FJ ENLARGER FAILURE 1 Check if the enlarger is connected and switched on Connect the enlarger directly to a power outlet to check if it works 3 Or connect the cord of another lamp to the Colorstar socket and check if it does light up mo
5. 1 Ler paver plugs two cords Connect fi preerger to the trailing socket ne prete 18 connected to the sensor conrector 12 At first use or when J2cnecung another probe please check orobe set up according to par 27 MES s 6 SENSOR pra f Os A O ee g a rad 2 SWITCHING ON The analyser is switched on with the power switch 3 at the rear of the keyboard The enlarger lamp lights up for a short moment and goes off again 3 SWITCHING THE ENLARGER LAMP The lamp is toggled on and off with the LAMP key 43 The LED 5 indicates this AUTO LAMP OFF If you forget to switch the enlarger lamp off this is done automatically after 5 minutes 4 MANUAL SETTING OF EXPOSURE TIME The exposure time as indicated by the display 8 can be adjusted manually by using the A and Y keys 6 and 7 The alah continues first slowly and then aster if one of the keys is held down 5 EXPOSING a An exposure is made by first switching of the enlarger with the LAME key 3 then putting the paper down and pres sing the EXPOSE key 9 b Exposures may be interrupted with tre EXPOSE key S and resumed again c Un the display 8 the exposure time counts down If you want to hear a beep signal 1x per second you need to press the key 10 once during count down lt can be switched off in the same way d The exposure may be ended using the LAMP END xey 4 The original exposure time return
6. Se Ke Fe spera AA A 3 if the white step is not transparent it is better to take the slide out and nuli on the white light 2 Next test the grey steps The LogY lV D values should be almost equal at every step especially in the middle region the LogY M and O values show large differences you may consider to use camera correction filters in arder to establish the correct filters test a grey step in the middie region and try different filters on top of the probe until the Y M C readings become equal Then use these fitters in front of your camera lens for picture Taxing y Testing your film developer Control strips for testing your film developer are available from manufacturers After processing they can be inserted in your enlarger for testing and compared to the original developed by the manufacturer Your own film test strip Even when shooting on color negative film it is good practice to take one shot of a grey step card as described above to check your studio lights your exposure meter and the fim development insert the film in the enlarger and measure the projection with the spot probe as follows e For testing color negatives Status M densitometry is required This is obtained by setting to NEG n 00 e Null on an unexposed end of your film the film mask e Then read the grey test fields in the test negative Again for properly balanced negatives it is necessary tha
7. but subtract 4 paints from Yellow and 2 points from Magenta Or 6 and 3 points for an even warmer tone To calibrate channel 3 for spot measuring an flash tone e Copy the values of channel 1 but subtract 12 points from Yellow and Magenta add 9 points to the Density eal 3 E y 3 3 The set up sheet provides a list for your channel values As an example we printed the set up of the analyser in our darkroom below These values are subjective You may want to change them to suit your surposes better In any case do not change the values for channel 1 anymore Continue to use this channel for calibration but after the initial calibration make the corrections only on the Master values See par 17 Your channel set up once established will remain a constant factor The Master corrections ensure that changes in the chemicals and paper are automatically corrected for all channels ANALYSE AND EXPOSE The measuring method as described below semrintegrated with averaging is most convenient to begin with You should use the white diffusion cover an the probe and select channel 5 for most subjects since channel 4 may be too cool for many purposes insert your own negative 1 Press ANALYSE Open the lens aperture and adjust to white light filters at zero Note This is not a requirement but it does facilitate composing focusing and selecting your test points Put the probe on an area where you see
8. integral measuring Integral measuring Far integral measuring on the complete negative a diffuser is used under the lens the lens using the same device as for spot reading Every negative size requires a separate calibration Negatives should be framed accurately at full negative size Dominant colours can have significant influence on the results Daylight reducer This increases the maximum exposure limit of the spot probe It consists of a reduction disc item No 196 that fits into the probe diffuser No 104 and is held in position with mounting strip ltem 199 The daylight reducer is necessary for using the color spot probe outside the darkroom lt can be used in the studio or in daylight to select Gamera cerracoon filters The probe does not measure flashlight Optionally available Pencil Probe accessory For measuring on slides and negatives mounted in slide duplicators Can also be used on glass plates of cameras Fibre optic cable with 1mm plastic tip Fits all spot probes ltem No 122 TX490 72 This diffuser may be cut from the supplied foil and mounted in the redfilter holder of the enlarger Measuring is centrally under gt PART 4 TECHNICAL DATA 25 PAPER AND FILM Average Y Ni D values o If you do not have a known negative for the AUTOPROGRAM method you can use the appreximate Y M D channel values from the table below to make your first test print Then
9. second cait ration value d Continue this until all 5 values are entered correctly e You may rotate all numbers with the key to check them and then confirm and end the calibration with the LAMP END key S DEVELOPER CONTAMINATION Test your paper and chemicals by making a control strip Follow the procedure How to make your own control strip in paragraph 25 of the Users Manual Observe if the white is not contarninated Test if the black is not brown and the light and dark greys do not have an apposite color shift All this will show in the quality of your prints The analyser can correct for overall color shift but it cannot bring your chemicals back to strength TM MEMORY ERROR All channel values and calibration data are stored in an EEPROM memory chip The data in the chip may become disrupted in rare cases Possible causes are e A power cut or electrical interference occurring while you are doing calibration steps or changing the channel e When in order to change the paper type setting one presses the x key while switching the power OFF Press the key only while switching the power ON The following message is displayed if a memory error is detected E Error The following data are affected 1 The probe calibration values 2 Calibration values of the A D converter 3 The paper type setting the channel values and the master values Ask your distributor for assistance
10. 6 mixture of calors and an average Nl An example of a channel set up Chan Measuring method test color Ch 3 Skat Ose Ch 4 Semiintegrated density Avaid dominant colors and very right or dark areas Press ANALYSE again A beap signal confirms that this measurement is stored far averaging 3 Choose another neutral or mixed area far the probe and press ANALYSE again to store it Repeat this a few times You can store up to 8 readings Leave the probe at the same spot after staring your last measurement don t mave it again 4 The Color Star display now indicates the filters that you need to use generally Y and M Turn the filters in again and adjust them until the LEDs of the star go out use only 2 filters see par 6c and d Adjust to the required aperture observing a minimum exposure time of 3 seconds 5 Press LAMP END to end analysing The exposure time is now stored and you can remove the probe 5 Press LAMP again to switch the enlarger off Put your paper down and press EXPOSE Try a number of relatively easy negatives this way Compare your prints considering the areas where you took the measurements and how this influenced the end result In this way you gain experience before you start using the analyser for more difficult subjects ae IS a LA E EA e aa TREBOOL PART 1 THE COLOR ANALYSER 1 CONNECTING Piggyback cower plugs one cord Ya AR the enlarger to the plug
11. AR SIIN i COLOR ANALYSER i H i m8 o AE 13 BOLA 8 8 BNI GD i HEHE MAA 14 6 Bw 5 Das pia bs f l e A la 10 G Lame Erose mE SFE ENO AIST a we 15 ANALYSING WITH AVERAGING Normally you are analysing on 1 test point vas also possible to analyse on an average af several points 8 maximum Usually 4 or 5 are sufficient The measurements may be taken at fuil aperture and white tight The procedure is as follows a Press ANALYSE and place the probe at the first test point b Press ANALYSE again a beep signa confirms that this test point is stored Place the probe at the next test point and press ANALYSE again d After storing the last test point leave the probe position unchanged and null the Color Star 12 with the enlarger filters e Adjust to the desired lens aperture and press LAMP END before removing the probe WwW ol p Remark This procedure increases your range of exposure times by a factor of 10 You may need to calibrate another channe far working at lang exposure times since most papers change in color due to reciprocity failure See par 25 16 ANALYSING WITH REFERENCE The probe signals are continuously corerated whenever one of the signals is 23 wreak to produce an accurate aasurement The warning consists of cvermuttent flashing of the LEDs in the gt rresponding color of the star if this appens you can use the foll
12. Cyan fltration These 2 values govern all 3 colours The Density indicator 15 will blink if the key is pressed for the fourth ume and now the Density channel value is displayed Increasing or decreasing the Density value with the UP COWN keys will result in higher or lower exposure umes when analysing Increasing with 1 point corresponds tc approx 2 5 and 4 points with 10 30 paints results in a doubling of the exposure time and 100 paints equais ten times All channel vaiues are densitometric Logarithmic The channel changes must be confirmed and ended with the LAMP END key Apart from manual changes the channels may also be programmed automatically using the Autopragram or Reprogram functions See paragraphs 72 and 74 10 PAPER TYPE INDICATION When the key is pressed for the fifth time the paper type is displayed lt cannot be changed now only as indicated in par 7 Pressing the key again will show the Master values see par 17 Tx48905 11 TEMPERATURE DISPLAY The probe temperature can be displayed cy O ks the EXPOSE key 9 while soring the key down Example The reading should correspond to an ordinary thermometer in Celsius within 1 or 2 degrees Larger differences may indicate that the probe is not properly set up or defective Check the set up according to par 28 AR 12 CALIBRATION WITH A KNOWN NEGATIVE AUTOPROGRAM For calibration of the anal
13. ITA AAA AA ce AAPA 3 1 A Spot measuring is used if there ts a reference colour in the projected irnage e g if a grey card was used for a reference shot Cosine correction Tilt the probe to the lens The shadow of the opening in the transparent device should fall around the cell Density test on prints The regular spot probe attachment is alsa used ta perform densitometric measuring on test strips as follows The probe is placed in the centre of the projection on your easel The negative is removed the lens fully opened and the filters are taken out The enlarger naw acts as a white light source o The test strip is inserted in the probe Because of the high sensitivity of the probe it can measure the print dyes through the paper See fuil description cn page 5 11 d ee 4d 3 3 3 4 inserting the 4mm spot disc ITO oe ed V Spot measuring 4mm is not suitable for large print sizes because it reduces the sensitivity of the probe Probe diffuser for semiintegrated measuring A simple and foolproof method that is strongly recommended to begin with At semi integrated measuring select a part of the image where color and density appear to be neutral in other words where no dominant colors are visible When in doubt it is best to average several areas This method is suitable for most applications and avoids some of the constraints of spot and
14. OLORSTAR 3000 including your reprogramming results and test print density readings 2 Maii or fax us a copy 3 Also send the Log sheet if used and other data you consider relevant This enables us to evaluate the cause of your calibration problems P PROBE CHANNEL FAILURE The correct operation of the probe amplifier channels can be tested as follows 1 Analyse with the test negative at full aperture and null the Color Star 12 with the enlarger filters 2 Gradually close the aperture The first LED may light up of one or two color rows but in general the color balance should be maintained until the end of the range which is indicated by LEOs blinking if the Color Star shows a significant change one of the probe channels is probably defective or needs recalibration The probe should be returned for repair if the color balance is maintained correctly the probe is probably not defective 17 A a en eR ph le TSS VARS s Ca more yer i ees TROUBLE SHOOTING PROCEDURES CONTINUED Q PROBE FILTER FAILURE The color filter characteristics of the probe are factory tested and errors rarely occur However all doubts can be aliminated by testing the quality of the color analysis as follows Select 4 different negatives for this test e Each negative must be analysed with semi integrated measuring This requires that a channel is calibrated for this method The test aiso works if the calibration
15. Probe diffuser 106 4mm spot disc 151 Clear spot probe cover 1352 Diffuser for spot probe cover 155 Sheet of diffusion material 7x7cm 196 Daylight reducer for spot probe 189 Mounting strip for daylight reducer Guarantee card 2 Check the mains voltage Connect the power cord the enlarger and the probe see par 1 Switch on Check the temperature indicatan see par 11 Press the LAMP lt END key to return to time display 4 set the analyser to your paper type see par 7 Note Never press the key or any other key while switching the power off This may disturb essential data in the memory Press the key and select channel 1 with the a and Y keys see par 8 6 Pressing the key 3 more times displays the Y M D values The Y M D values of channel 1 need to be preset to approximately correct values before starting the CALIBRATION WITH THE GREY TEST NEGATIVE e For automatic presetting you can use the Autoprogram method see par 12 This requires a negative for which the filter settings and exposure time are known i e one printed just before you started to instali this color analyser e If you do net have a known negative you Can preset to approximate Y M D vaiues according to the table of par 25 Pressing the key again displays the Daper type Pressing the key again 1 2 and 3 umes displays the Master Y M D values Check if they are all set to A50 a a N n
16. The reset procedure is in the service manual It can be executed by any technical minded person TT karotid r TT e Es FRAN ee A a 23 SPECIFICATIONS OF THE COLORSTAR 3000 COLOR ANALYSER SPOT PROBE ANALYSER FUNCTIONS A AS Se tears measur y o 2 rstometer range aper Grade readings for B amp W emperature measuring Paper type selection Siope correction Program channels Programming range for Y M and Density Master range for Y M and Density Auto program Reprogram Color Star display TIMER SPECIFICATIONS exposure umer Auto Lamp off ELECTRICAL SPECIFICATIONS Mains voltage Enlarger load Fuses Power consumption DIMENSIONS Keyboard Spout proba Cord iengths approx TXSBO 19 Spot probe for color and black and white For spat reading 4 and 6 mm sermantegrated 57 mm and integral measuring Averages filtration and exposure time for 9 maximum of 8 test points Memory for measuring with and without negative in order to analyse for very large print sizes 99 to 9 99 Log Density and Log YMC Due to technical differences the test results are not exactly equal to other densitometers O to 5 in steps of 0 5 Reads probe temperature in steps of approx 0 3 degrees Celsius Color negative process color slide process and black and white OO to 35 in steps of OS Adjusts the Log expusure multiplier between 1 00 and 1 35 8 channels Master ch
17. USERS MANUAL 3080 CONTENTS Page step by step instructions 34 Part 1 Tha Color Analyser 1 Connecting 5 2 Switching on 3 3 Switching the enlarger lamp a 4 Manual setting of exposure time o Exposing O 6 Analysing 9 7 Select paper type 5 8 Selecting a channel 6 Y Changing the channel values 6 10 Paper type indication 5 11 Temperature display 7 12 Calibration with a known negative Autoprogram 7 13 Density test 7 14 Reprogramming with the grey 8 negative 19 Analysing with averaging 8 16 Analysing with reference 9 17 Master g Part 2 Black and white 18 Selecting black and white 10 19 Calibrating with a known negative 10 Autoprogram 20 Determination of paper grade 10 21 Variable contrast paper 19 22 Measuring methods for B W 10 Part 3 Probes and measuring methods 23 Available probes 41 24 Analysing with the spot probe 11 12 Part 4 Technical data 25 Paper and film 13 15 26 Influence af darkroom safelight 15 27 Trouble shooting 16 28 Trouble shooting procedures 17 18 29 Specifications 19 Set up sheet blank for copying eu Log sheet blank for copying 2 Programming functions summary ce Operating functions summary 23 TRASH STEP BY STEP INSTRUCTIONS 1 When unpacking please check if ail ems are present Items normally included in delivery 3100 Colorstar 3000 keyboard 173 Carrying case 174 This instruction book 211 Grey test negatives slides 35mm 600 Colorstar spot probe 104
18. ad of the spot probe or additionally 24 ANALYSING WITH THE SPOT PROBE Several devices for different measuring methods can be inserted on the spot probes Start by choosing a measuring method a Spot measuring cn a selected reference color usually grey cr fesh tone b Semiantegrated measuring usually on a neutral or warrvrtone part of the image c Integral measuring Attach the corresponding cover onto the probe For integral measuring mount the diffuser foil in the filter carrier under your enlarger lens Every method of measuring requires a difterent calibration of the analyser You can use the 8 channels for this We advise you to use only 1 or 2 channels to start with You need to calibrate only one method When changing to another measuring method you will need another channel The grey negative or slide and the Autoprogram function enable you to use the calibration of your first channel for it as follows a Analyse the grey negative with the first method Null the Color Star with the fiters and adjust the aperture for 10 0 seconds exposure time ETA oe D Now insert the device for the next method select another channel and ANALYSE again c With AUTOPROGRAM VA 10 0 sec END this channel is calibrated inserting the probe attachments Press gently while inserting as indicated Remove in the same way RSENS AN CUE FURR O PEM eee eee DIAN LA EN III PON ESA II III IE
19. annel O to 999 9 99 Log For each channel individually O to 99 Normal value 50 Influences all channels Automatic calibration of 1 channel using a known negauve Automatic recalibration of 1 channel or of the Mastar values using a test print of the grey negative or slide 3 x 4 LEDs The first LEOs show the colour balance within 1 cc Each subsequent LED 4cc 0 1 to 999 seconds Countdown display and bexsper interrupted exposures are possible Enlarger lamp is switched off automatically after 5 min 100 120 or 200 240 Volts AC 50 60 Hz Max 700 VA at 117 Volts or 1300 VA at 220 Volts 100 mA and 8 3 A Slow 5 x 20 mm 6 VA 155 x 155 mm Height 63 mm 78 x 78 x 23 mm Probe cord 2 meters Power cord 2 4 meters 19 ever 97 A mmea AR BAA AO Setting up your COLORSTAR 3000 Sead the STEP BY STEP INSTRUCTION and enter your data below o Temperature reading Your own thermometer reads e The paper that you are going to use Is e The paper type selection is n 00 p 30 b 00 or other o You have preset channel 1 to these values Y MD o Your first greytest print reads LogD LogY LogM LogC if this testprint is not neutral grey use the reprogram procedure and record your results Reprogramming results in these values Your next testprint reads these densities D LogD LogY LogM LogC After the initial calibration enter the Y M D values below Make future corrections in the Master
20. channel values When you are setting up other channels enter the data below A ee Chan Measuring method Neutral grey Paper j i serni int spot etc or specify Y M D Spot 6mm Grey i mal L EE AN es IAS E Ae o if you use only one batch of paper you can use the Master channel to correct for paper batch and developer change if you use different batches of paper you can set up one or more channels for each batch and use the Master channel to correct for changes in the chemicals Keep track of the Master value changes on the Log sheet ar i and 20 TARDI ch i Y gt ra e 8 sa ela a WO 8 mM QO fo HAT rs og E eae a gt t D i o O 3 U T a L e 5 e va 5 D gt C gy A PE N 13 c Qe D 2 3 in ee u O a C Q O my wt I Dy f H Y gt gi le Ol 2 a a 3 o cu oO Y gt C 0 kE d E wf iy Xx wack a e E i G a d E O O rL COLORSTAR 3000 Programming AA ORIN AONE aam e Enlarger Select Function Setting Function Execute End Set Select n p b with Y su Paper Type ax Power On Select OO to 35 with A LAMP ENG Channel Nr ES Select ch 1 8 with A or Y LAMP END Y M D Channel a se oe LAMP END Values Paper Type ade abe fe abe axe LAMP END indication Y M D Master Ba
21. correct contrast filter if you use the Density Probe c Prass ANALYSE and place the probe on a selected part of the image See measuring methods d Now press the key 10 with one fin ger and while holding it down use two other fingers to press the UP and DOWN keys 6 and 7 simultaneously Use the UP and DOWN keys to display the correct exposure time f Confirm and end the procedure with the LAMP END key before removing the probe 097 10 By pressing the key twice you can read the Density channel value and note it for iater reference increasing or decreasing the D value results in higher or lower exposure times during analysis See aiso paragraph 9 20 DETERMINATION OF PAPER GRADE The spot probe can be used to find the contrast in the negative in order to determine the correct paper grade This is done as follows a Press the key 10 down while pres sing the ANALYSE key Density test b First measure the lightest part of the negative where any detail is still visible c Press ANALYSE STORE The display now reads 0 00 d Now measure the darkest area which also has any detail The display 8 now shows the contrast of the negative in order to find which paper grade corresponds to this contrast press the DOWN key 7 The reading is from O to 5 in steps of 0 3 co 21 VARIABLE CONTRAST PAPER The Density Probe No 601 directly reads the exposure time for any contrast fil
22. developer and bleachfix errors Low readings may indicate low developer temperature or concentration short developing time or developer depletion For complete information consult your paper and chemicals manufacturer Your own control strip Manufacturer s control strips are excellent to test your chemicals but they do not test your paper or the combination of your present batch of paper with the chemicals you are using The best solution is to make your own control strip for a professional check after calibrating your paper with the grey test negative How to make your own control strip After obtaining a perfect grey testprint insert the grey testnegative again Analyse and adjust the lens at least 2 stops down from maximum aperture 1 8 t 8 Adjust your enlarger height until the exposure time reads 5 seconds Now expose a test strip in 4 parts each time covering the other parts and your white reference The exposures are made with a the correct lens aperture f 8 b one stop less light f 11 c one stop more light f 5 8 d two stops more light f 4 After processing the strip looks like this D MAX White neutral istop 1stop 2stops D MIN ND LD HD When testing the densities all greys should be neutral The readings for LogY and LogM and Leg should be 14 approximately equal at every step The I MAX test field should be near Diack a gt readings of approx 1 20 or higner depending on t
23. e LAMP END before replacing probe TOTS IN beter eee Sen ees AE AREIA i AA ARAS DA ARI E ay IAEA SS NINE IR tai Bt Fatty Sones Ba kat pens su pet et aot aty 4 PRA E a gt e Sats 5 y ne 43 aaie 2 es wept x en tonto o hd bat Dig ae bal z UE E ES NM A BA P LAMP END before replacing probe Without neg 4 Y together Nuli star with filters Adjust lens aperture LAMP END Po A cheba we 2 a TX480 23 23
24. e the dye densities of a test strip or phato 1 Press the key and while holding this down press the ANALYSE key 2 Enter the paper into the spot probe by slipping it under the spot device 3 First position a white part of the print over the cell and press ANALYSE to null the reading 4 Then position the area to be tested over the cell and read the display Ex le 10 55 The displayed value is the average density of the 3 dyes To read the individual Yellow Magenta and Cyan densities press the key 10 several times read LogY Y LED 13 blinks read lLogM M LED 14 blinks readlLogC LEDs 13 14 blink The density test is ended with the LAMP END key 4 14 REPROGRAMMING WITH THE GREY TESTNEGATIVE After calibrating a channel tentatively e g with the Autoprogram method yau can analyse and print the grey test negative The testprint should become neutral grey Make a test print regularly to check the condition your paper and chemicals Process variations may be compensated far by changing the Y M O channel values ather manually according to par 9 or automatically using the REPROGRAM method pba ba make the test print like Crs 1 insert the grey negauve in the eniarger and project it to size 8x10 inch 2 ANALYSE with the reguiar spot cover on the probe placed centrally under the enlarger tens 3 Null the Calor Star by adjusting the enlarger filters 4 Adjust the apert
25. he type of paper Example A graph of a typical test resut brownish blacks not enough Cyani 14 1 2 We advise to do this test with new paper and chem tor e test resi Repeat the test whenever you doubt your paper and chemicals and compare the readings Also compare the whites to detect contamination imbalances crossed curves can be caused by ageing of the paper or by chemical problems These errors cannot be eliminated by correction filtering anc lead to variations in the color balance between light and dark areas of the print Paper reprogram log For various reasons it is advisabie to keep track of the paper calibration values that you obtain fram doing the Reprogram procedure A large increase of the D value 10 points or more is a warning that your developer is becoming oxidised or depleted Test your studio lights if you are shooting transparencies in a studio you may want to check the influence of the studio lights to review the need tor correction filtering We suggest that you take a reference picture of a grey card preferably one that has steps from white to black 1 After processing insert if in your enlarger white light fens open Focus and test it as follows 2 Select POS process p 30 and start the densitometer function ANALYSE Read the white step and null the densitometer with the ANALYSE key TARO 14 CSET APT Pe SA Hee AGA itt te TAE ni MINS ween l ier Ra Sg
26. is not 100 accurate o All 4 negatives must be printed together on one sheet of 20x25 cm print size approx 9x12 cm o This sheet must be developed without cutting it If you want to send this sheet in for cur evaluation we need to receive ib in cne piece lf the sheet shows equal color balance and density for all prints at least at the analysed areas the probe has accurate y sopied the test color This may not be the correct color But after improving the Y M D channel or master calibration all prints will be of the same correct color and density However if the 4 prints are cleariy different fram each other the probe is probably at fault and must be returned for inspection and repair We appreciate receiving your comments and examples with the repair shipment R PROBE CALIBRATION ERRORS The probe calibration values indicated on 3 label at the bottom of each spot or easel probe are entered into the analyser memory An error in the first value results in incorrect temperature readings with EXPOSE Check the entries as follows and sorrect them if necessary First switch the power off a Hold the ANALYSE key down while switching the power switch 3 on A figure 1 is displayed b Press the key 10 The display now reads the first calibration value a number cf approx SOO lt may be changed with the UP and DOWN keys 18 c Pressing the key again displays a figure 2 and again the
27. jess Change with A and V LAMP END Values a With known Place probe on test point LAMP END Autoprogram negative ANALYSE and A and Y together Before set filters Star is nulled removing the and aperture Set exposure time with probe A and V keys i Make insert grey Probe centrally under lens LAMP off Test Print test negative ANALYSE use appropriate device Expose test i or slide Null star with filters strip Adjust aperture for 5 sec i partiy white White test Density No negative ANALYSE ANALYSE STORE 0 00 Lamp End i test on White light Read grey or colour LogD i Test Print Lens open LogY LogM Log 2 Neutral approx 0 55 Slide print approx 0 45 i i Not replacing probe Reprogram Density test ch r for channel or LAMP END t i Continued x a r for Master then A and V keys together Connect 1 500 2 500 3 500 another ANALYSE 43 500 5 3 500 LAMP END i Power On Insert values according to i Probe i t label on the bottom of probe using A and V keys i 22 TARD Lamp toggles on off Use 4 and Y keys LAMP off EXPOSE START May be ended with LAMP off EXPOSE EXPOSE EXPOSE May be START STOP START ended with LAMP END Mba a dal test point Sepa star with filters Adjust lens aperture vd seek piste gt replacing th
28. of the camera lens For tungsten film 3200K Y 630 M 5390 For tungsten film 3400K Y 622 M 586 26 INFLUENCE OF DARKROOM SAFELIGHT While analysing with the color analyser you can leave the yellow safelight on but it should be indirect and of low intensity With black and white measuring you may use yellow or red safelight in order to check whether the safelight influences the readings especially at long exposure times cover the safelight imomentarily while analysing and observe whether this influences the Color Star nulling or the exposure time reading A aman LUE OD IA rm rr rr PR AIR mi II A e a 27 TROUBLE SHOOTING START HERE Check these SAO EOS procedures Connect and switch the power on 3 Are the display and panel lights on Yes Y A B C D Press the LAMP key several umes Does the enlarger lamp switch on and off Yes Press the ANALYSE key LED 18 ON Do you see Color Star LEDs lighting up Yes 34 Analyse with the probe under the enlarger No Can you nuil the Star LEDs with the filters Yes No S Does the exposure time on the display change with the lens aperture i Yes Yes _ Are the Color Star Y M or C LEDs blinking on and off aeaee seene ow No 7 Press EXPOSE temperature reading is the correct temperature displayed No Yes _ Calibrate channel 1
29. owing method tor analysing Press ANALYSE Fully open the lens and select white light Measure your selection with the probe Press ANALYSE again to STORE this reading Repeat steps 2 and 3 if you want to average several points not required Remove the negatve from the enlarger and put the probe in the centre of your iwhite light projection Press the UP and DOWN keys together to store this reading as a reference Leave the probe in position Now deselect the white light and set your filters and lens aperture as usual Press LAMP END before you remove the probe reinsert the negative and print it 17 MASTER Apart from the 8 sets of Y M D channel values the analyser also offers Y M D Master values Thess influence all channels the analyser adds the two sets of values together The Master is used to correct for fluctuations of the chemical process and of the paper The Master values are indicated by the letter A for Al Channels and are found by pressing the key a total of 6 7 or 8 times The Y M or D indicators 13 14 or 15 will be blinking The Master values are initially set to 50 which is displayed as ASO The adjustment ranges fram ADO to A99 They can be set manually with the UP and DOWN keys om o k ilo D EAN S Reprogramming the Master values After testing your grey test print see par 14 Reprogram you can access the channel reprogram ch r function by pressing the key Press the
30. process p positive printing color slides b black and white process o Use the A key to select the slope 00 linear O5 to 35 exposure time correction for paper reciprocity failure Afterwards press the LAMP END key 4 to end the adjustment procedure 8 SELECTING A CHANNEL Press the key The display indicates the paper channel in use Example You can use the UP DOWN keys to change to another channel The channels are mainly used for a different measuring methods b different subjects The Y MD channel values control the color and density They are stored in the program memory See par 28 TM y i j COLOR ANALYSER i i a yr a 2 13 x o ross 144 M o E 0 S OEP AT EA i he OMAR ON SE ie A 18 ae 1 faz ae CTE 9 CHANGING THE CHANNEL VALUES Press the key again The Yellow indicator 13 will now blink and the Yellow channe value will be displayed a number between O and 999 Example 604 This value may be changed with the UP DOWN keys Each point increase in the Yellow value results in 1 point higher filtration when analysing By pressing the key again the Magenta indicator 14 starts blinking and the Magenta channel value is displayed Increasing or decreasing this value leads to higher or lower M filtration Note If the Yellow and or Magenta fil itration is at zero lowering the Y and M l program values will result in a corresponding
31. r off 3 Develop both strips and measure the Log D Density test of the greys The two prints should be approximately equal 4 lf the 20 second test is darker by more than 02 you could set the slope higher C 02 0 07 darker Set slope to 05 C G8 0 12 darker Set slope to 10 For transparencies the procedure is sightly different Close the lens not by 2 but by 3 stops to approx SO seconds exposure time if the 50 seconds strip is darker decrease the slope setting 0 03 0 07 darker Set slope to 25 2 08 0 12 darker Set slope to 20 0 03 0 07 lighter Set slope to 35 Beware Changing the siope also requires that you calibrate the D value again e Analyse the grey negative with the former calibration unchanged o Close the lens to a reading of S C seconds Leave the probe in place e Enter the new slope value and analyse again if the exposure time is not 5 0 seconds anymore you need to correct the O value Process monitoring You can check your chemicals with contra strips pre exposed teststrips on your paper type available from paper manufacturers You can do a density test on a strip developed in your chemicais and compare this with the reference strip developed by the manufacturer Example 13 EE O a a a O a ms ald The minimum density test field gives an indication of contamination oxidation or over activity of the developer The maximum density test field may indicate
32. s on the disulay 6 ANALYSING a in order to analyse place the probe cn a selected part of the projected image using the chosen probe accessory See part 3 for measuring methods b Before using the analyser it should be programmed to the eniarging paper you are using See par 7 onwards To start analysing press the ANALYSE key 11 The Color Star 12 will light up in one or two colors Yellow Magenta or Cyan d if you see Yellow LEDs lit the Yellow filter of your enlarger must be increased until the Yellows LEDs go out If you see Magenta LEDs light do the same with the Magenta filter Always use only two filters at the same time If you see Cyan LEDs light up then first lower the Y and M hitration if all LEDs are out the color balance s correctly adjusted The correct exposure time is then indicated by the display 8 f Afterwards end analysing a pressing the LAMP END key 4 This must be done before removing the probe O E 7 SELECT PAPER TYPE Adjust the analyser ta the paper type that you are using as follows e Switch the analyser off press the key and while holding this key down switch the power switch 3 on again The present paper type adjustment is now displayed Example n 00 This is correct for color negative process For transparency printing select P 30 For black and white select b 00 e Use the Y key to select the process na negative color negative
33. t the LogY M C readings are not too different fram each other 18 grey should read approximately 0 60 plus or minus 0 10 is acceptable Camera correction filters may be calculated but this is more difficult than for transparency fiim since the filters work in the opposite direction You also need to overcorrect since negative film is soft If your light source is continuous not flash it is easier to check at the source using the Colorster 3000 as a color temperature meter Color temperature balancing With the probe diffuser installed measure with the probe towards the light source For measuring daylight or bright studio ight you need to insert the daylight reducer into the probe diffuser e pe ees i o al lt r Ry gt o gt s Select POS process P 30 Set the Y and M Master values to ADO e Select an unused channel and set Y to 578 and M to 564 for daylight film e Press ANALYSE The Color Star now indicates which filters are required Hold correction filters in front of the probe diffuser increasing the filters in strength until the star is nullad 1 If Y and M LEDs light up use amber yellowish conversion filters or Y M filters 2 if M and C LEDs light up use bluish conversion filters or M C filters The filters that are found in this manner should be used in front of the camera lens or the light source Avoid using too many filters in front
34. ter pack either with an ordinary colour head or with a vario cantrast module When using the standard color probe this is nat the case You will need to measure with white light and afterwards enter the filters for printing A special filter package or V C module is needed ensuring constant exposure time for all grades 22 MEASURING METHODS FOR BLACK AND WHITE The same methods may be used as for color E g semiintegrated messuring c an average area or spot reading on a middle grey reference area You can 3 52 average measurements and do integra measuring with a diffuser under the 7 Several Easel Probe models are avaat gt When doing process contro wih tne 2 33 and white Grey Test Negatve you ca us the REPROGRAM method This works ces at paper grade 3 ME vs PART 3 PROBES AND MEASURING METHODS 23 AVAILABLE PROBES a The COLORSTAR 3000 is normally suppied with a colar spot probe Item Nic STO This may be used for colour CE gees sides and black and white So Far exposure time measuring only mora sensitive and lso less expensive soct probes are available Item No 591 is specially adapted to variable contrast papers Item No 604 is for exposure timing of color papers o Easel Probes are available for color balancing and exposure or for exposure time only Working with these easels Saves time and their sensitivity and measuring accuracy are optimal They can be supplied inste
35. ure for an exposure ume reading of 5 seconds mas y 5 0 A End analysing with the LAMP END key before you take the probe away 5 Expose a test strip centrally under the lens partly covering it for white reference e g with the probe 6 Process the strip Next do a density test on this print a Insert the test strip in the device for spot reading on the probe in such a way that the white part covers the cell b Remove the negative from the enlarger and set white light on the color head open the aperture completely c Press ANALYSE while holding the key down and zero the display by pressing ANALYSE again d Now shift the paper for the grey part to cover the cell and read the Log Density and also the LogY M C densities by pressing the key 3 umes The test print should be neutral grey with approximately these readings LogD LogY LogM LogC 0 55 For Slide printing process 0 45 if the readings are different the analyser will correct the channel values automatically if you proceed as follows leaving the testprint in the proba Al Press the key again The display reads ch r for channel reprogram B Press the Y and A keys together C Press the LAMP END key You can read the new Y M O values and note them in a log Make a new test print as described and check if it is now neutral grey Repeat the procedure if necessary i i mie i 22 0183 ST
36. use the REPROGRAM method to improve the values e These values apply to requiar spot measuring 6mm and are also vaiid for Easel Probes e The Master values are assumed to be at ASO A50 AS0 All papers for color negative JTOCeSss lifochrome and other positive process papers B W variable b 0 contrast papers Reciprocity failure The slope setung of the Colorstar 3000 corrects the exposure ume for the paper reciprocity failure There will usually be a sight color shift due to the fact that the reciprocity failures of the Y M and C layers of the paper are not equal Because of this effect it is advised to stay within a limited range of exposure umes 1 8 4 10 seconds You may calibrate another channel for printing accurately at other exposure times 1 8 30 80 seconds For this calibration you need to make a grey test print at 50 instead of 5 saconds Slope The optimal slope setting for your paper may de slightly different from the value in the table Usually it is not wortnwhile to fine tune it since the color shift of the paper forces you to remain within a limited range of exposure times After calibraticn with the grey test negative you can check the paper failure as follows 1 Expose a grey test print at 5 seconds exposure time as usual 2 Then close the lens by 2 f stops measure the exposure time again approx 20 seconds and expose a second test strip mark this one by ripping a carne
37. yser you may use a negative for which the correct filtration and exposure time are already known because you have recently printed it a insert the negative in the enlarger and adjust to the known filtration and aperture Also set the enlarger height correctly b Press the ANALYSE key and place the prabe at an appropriate part of the projected image See measuring methods c Now press the key 10 with one finger and while holding it down use two other fingers to press the UP and DOWN keys 6 and 7 together The Color Star 12 is now balanced automatically d Next use the UP and DOWN keys to adjust the display 8 to the correct exposure time for this negative You need to hold the UP or DOWN key for some time if the display starts at O O or O FL e Then press the LAMP END key 4 to confirm and end the programming procedure Only after this step the probe may be removed Note Press the key 10 several times now and note the channel no the Y M D values obtained and the paper type on a log sheet also indicating what measuring method was iused Keeping track of these data is helpful if sudden problems arise with papers or the chemical process 1442007 13 DENSITY TEST The ANALYSE command changes your Color Analyser inta a Densitometer You can use your enlarger set to white light as a light source Turn the lens fully open i i j E i i i To measur
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