RE: Vintage Photos - Lot 3 (505-508)
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I'm not sure what magic Epson's software uses for color correction but I know that for scratch/dust removal it combines an RGB scan with an infrared scan (hence taking longer). This can result in artifacts for slides that used Kodachrome film...something to do with the fact it uses silver.
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Of course its Kodachrome haha, I guess the blue hue made me think otherwise... It was the most stable of all, I used it a bit in the late eighties, but not after that.
Yes the structure of Kodachrome is different, actually it forms a sort of 3D relief, you can see that when you tilt the backside where the emulsion is, reflected light will show those patterns.
I have a 4x5/120/135 Epson scanner that is stranded back in Europe, rare thing that I got cheap, hope it has survived!
You're right in that Kodachrome was the most stable and typically have the least amount of color fading. I'm not actually sure what this set was. Possibly Ektachrome.
I see, well its coded outside of the image area, would guess (almost?) all Ectachrome produced has that printed?
Kodachrome is a very complicated, totally different process where each layer for the colours ends up being composed of a dyed compound only, so no silver, no fading.
Remember following efforts that people did to be able to keep it going, but ultimately it was actually impossible, at least in practical terms.