articles/Software/freeworld-page5
by Mike McNamee Published
You can bring up files for comparison with or without the metadata shown. This is very useful when 'culling' prints from a large collection. Tagging is also possible.
ACR Calibrator
Originally developed by Thomas Fors, this program (script actually) has been modified by a retired, IBM programmer called Rags Gardner. The coding allows the user to photograph a Macbeth Chart (in SG or CC24 guise) or various IT8 formats and then use the resulting image to automatically generate a set of calibration numbers for use with Adobe ACR. The download comes with clear instructions and another script which computes your error and lets you know just how well you have done. As an added bonus it also constructs a Photoshop layer, showing how far off-beam you are, visually. Overall it is a superb utility and no thanks are adequate to reward Rags Gardner for his freely-given efforts. Tests we carried out when we first tried the original Thomas Fors' scripts showed the routine to be as good as specialist colour management software and in many ways better - all for free! The addition of the measure script is a bonus. We have used the routine extensively in our exploration of the Canon picture styles reported in this issue, it enabled us to pinpoint exactly what was going on with the various settings. The scripts seem to work better in CS3 than they do in CS2 and, as we showed in the last issue of Professional Imagemaker, the faster the computer the better, in terms of getting the job done.
Adobe CS2 does not open Canon 1D MkIII files (left) but CS3 does (right). UFRAW can fill the gap!
When ACR Calibrator has finished its deliberations it prints the setting for the 'Calibrate' tab of Adobe ACR. As shown RIGHT, this can effect dramatic improvements in the colour precision of your camera, all for free!
www.rags-int-inc.com
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