Hi, everyone. I’ve got some problems with a glass plate negative.
Firstly, the image is very sharp but it has a blue patch in the middle and blue spots scattered elsewhere. The patch shows up as orangey-yellow on the physical negative, and I know it’s not a scanner problem because the previous owner had a copy printed in a lab about 10 years ago and it has the same blue patch in the middle of an otherwise black and white print. How do I get rid of it in photoshop? I’ve tried adding a black and white adjustment layer but, while the blue patch is somewhat disguised it is still fairly obvious due to tonal and shading inconsistencies with the surrounding image. Attempting to treat it as a colour cast affected the rest of the photo as well, making the discrepancy worse.
Secondly, is there any way I can rescue detail from the overexposed edges? It looks like some is there but the overall brightness makes it harder to make out. Is there some way to lower the exposure for those edges without affecting the rest of the photo? I'd like to have this printed out quite big (the negative is about 4.5 x 3.5 and blows up beautifully) so the more image I can preserve, the better.
Finally, what’s the best way to deal with the weird vertical lines on the left-hand edge?
Forgive me if these are really basic questions – I’ve looked quite hard on the Internet for answers and haven’t found any!
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