Scene Calibration tool
Contents
1. Phocus by Hasselblad User Manual Y Queue 1 unfinished task T x NY session_0408 tif 4 A Saving Y Queue Y Queue r A 10683 dnq Reveal in Finder Open In Editor Stop Delete One file in the Export queue Y Reproduction Gi Input Profile Hasselblad RGB amp u Reproduction mode O Scene Calibration Untitled uj Remove cast td Equalize intensity You can resize the Queue window by dragging the bottom edge if there are a large number of files on the list Drag thumbnails to the Queue tool as a quick alternative to Export as Previous Queue Displays files scheduled for export files currently being exported in the background and files already exported as well as files being imported in the background from a card reader or connected disk If the file has been adjusted and or cropped then this is also reflected in the Queue thumbnail You can Ctrl Right click the file to open a list of options Reveal in Finder Open in Editor Show Thumbnails Stop and Delete Files in the queue can be selected 98 A Ctrl A for all and paused by the Pause button stopped or deleted via the Options or deleted by Backspace Delete The pause button will temporarily stop any further exports remaining in the queue not currently exported Thumbnail files can also be dragged and dropped onto the Queue tool to Export as Previous The number of unfinished export tasks also2. appears on the Phocus icon in the dock as a reminder Reproduction Allows the possibility of specifying a custom input profile This tool is not included in the initial default setting as it is not commonly required It can be added by clicking on the menu triangle on the tool header When generating the input file to be used by your profiling tool it is impor tant to export with an output preset where the profile is set to Source Using the Source profile means that no ICC transformations will be applied to the data in the file The reproduction mode provides the option to produce a colorimetric representation This utilizes other imaging techniques that include the use of a linear film response curve Check the Reproduction mode box to activate Scene Calibration This tool helps to remove a color cast and or uneven illumination caused by lighting variations It has two checkboxes Remove cast and Equalize intensity Remove cast Particularly useful when tilt and shift are used for example where a partial unwanted color cast can sometimes be produced Proceed as follows 1 Create a calibration image by making a capture tethered or untethered of a neutral grey surface or use an opaque filter using the same lighting exposure settings focus settings shift amp tilt settings etc as the problem image If the capture was untethered import it into Phocus to make it a 3F file Select the thumbnail of the calibration image a
3. nd then click the Create button in the Scene Calibration tool A dialog prompts you to name the new correction With the problem image loaded in the Viewer click on the menu triangle of the Scene Calibration tool header and select the newly created file from the list Ensuring the Scene Calibration tool is active check the Remove cast box to view the improvements Also check the Equalize intensity box to test if a combination is even better This correction can then be applied to multiple images using the Modify dialog 48 Tool Area Hasselblad A S Hejrevej 30 DK 2400 Copenhagen Denmark Victor Hasselblad AB Box 220 SE 401 23 Goteborg Sweden 11 11 UK v11
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