DCG Color Tuning
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.