That makes sense, regarding positives.
I'm not sure I understand the part about blue filter - do you mean for contact printing on MG paper?
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That makes sense, regarding positives.
I'm not sure I understand the part about blue filter - do you mean for contact printing on MG paper?
An interesting proposal! Wouldn't that only influence the rear emulsion, after the light passes through the base? Actually now that I think about it isn't the x-ray film kind of lavender colored before fixing? Either way it would seem like you could test this by shooting two sheets back-to-back of a blue sky exposed to middle grey and then develop the same, and strip one side each (you'd have to keep track that you strip opposite sides). If the color causes a difference in exposure you'd see a difference in the density, no?
Ektascan is single sided. The blue tint is after the light goes through the emulsion.
I had in mind reversal processing and fast UV/blue exposure for cyanotype.