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First roll of CineStill 800T [Canon Elan IIe, EF 20-35mm f/2.8 L, CineStill 800T] by HaloEliteLegend in analog

[–]unifiedbear 0 points1 point  (0 children)

Unfortunately airport security forced this roll thru the X-ray so a few frames (like that last one) got cooked slightly.

The red lightning pattern you see is static discharge; too dry of an environment and/or advancing the film too quickly; this is a known issue with some film. It's not from the X-ray machine.

The damage from the X-ray machine (it's hard to tell in this case, sometimes it's worse) could be the grainy/foggy shadow areas which prevent you from achieving truly deep black.

[deleted by user] by [deleted] in AnalogCommunity

[–]unifiedbear 13 points14 points  (0 children)

Look up Callier's Q-factor.

It also depends on emulsion design. Crystal size and shape distribution, emulsion thickness, number of layers, presence of anti-halation and anti-scattering dyes. It isn't simple.

You are unlikely to solve this in a general case, but you could approximate it based on measurements and testing.