I just read though Digitizing film using DSLR and RGB LED lights - #22 by damirk and wandered if at approach would meld well with this software. I then though, would there be any value in having a light source with a range of different spectrum LEDs that we could cycle through to build a source image with more than just RGB input spectrum?
LEDs are small and it would be easy to have a dense array of different bulbs. They could be software controlled. I’m thinking of a process like this:
- Take an image with each colour LED and no negative. Use that to figure out the raw response of the sensor+Bayer mask and fix any inconsistencies in backlight brightness uniformity. Also calibrate light brightness and or exposure as required.
- With film in place take an image with each colour light, correct the captured data with the information from 1.
- Generate a spectral image and import into the negative processing pipeline.
This would all have to be automated or it would be too cumbersome, so in use, it would be a matter of pressing the setup button with no negative, then pressing the capture button for each negative.
Would that result in a meaningfully better result?