Add a "Convert positive" feature i.e. for scanned slides

[Digitizer]

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Improve old transparencies with Negative Lab Pro

I’ve just tried something. I’ve inherited a load of transparencies that date back as far as 1950ct. Most of the older transparencies have shifted colours due to age, storage and whatever other causes might exist. I wanted to see if I can use NLP’s internal process to improve the overall appearance of the transparencies. This is what I did changed orientation and cropped to taste adjusted WB and the RGB tone curve created a virtual copy inverted the RGB tone curve launched NLP This is what I…