Hacking the Kodak Reels 8mm Film Digitizer (New Thread)

0dan0

Active Tinkerer
Jan 13, 2025
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Hi @0dan0 -- I have a couple observations / questions about the ISO / exposure algorithm.

v7.1 - v7.5: During capture with my 'C' unit, the highest ISO / exposure that I observed was ISO 200 / ~5970µs. I never observed an ISO of 400 during capture, even with a black image. Is that behavior consistent with your expectation / experience?

v7.6: During capture with my 'C' unit, the highest ISO / exposure that I observed was ISO 100 / ~5984µs. I never observed an ISO of 200 or 400 during capture, even with a black image. Is that behavior consistent with your expectation / experience?

I understand that you're aiming for the lowest practical ISO for the film's density, but I'm surprised that none of the thousands of feet of film that I've scanned with v7.1+ has triggered neither your highest coded ISO nor an exposure time exceeding 6000µs. If that is by design, then no worries... I just want to confirm that my unit isn't underexposing images due to a hardware malfunction or firmware bug.
The code can go to 400 in preview, but this might be bug. Use the histogram to judge the exposure.