DCG Color Tuning

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Danny Bruza [1] was kind enough to share this chart he had made for his own use. The chart gives the playback Danny gets for a sequence of dichromate-to-gelatin concentrations at each of three recording wavelengths, 532nm, 514nm, and 405nm.

Di-gel 532nm 514nm 405nm
10-30 532 514 405
09-30 552 533 424
08-30 571 552 443
07-30 590 571 462
06-30 609 590 481
05-30 628 609 500
04-30 647 628 519
03-30 666 647 538
02-30 685 666 557
01-30 704 685 576

Results can vary. Many, many factors come into play with dichromated gelatin. Gelatin bloom strength, humidity, temperature, exposure, and karma all have an effect. Nonetheless, the table provides some guidance.

As another general guideline, bandwidth is affected by water concentration. Narrow band results are produced in the 150-250 range (meaning a 10-30-200 DCG formula, for example), and broader-band playback from the 300-350 range.