I have an image scanned from a negative that was very dark so there is a pretty severe display of the image gradations -it really looks solarized. The negative is destroyed so this is all I have to work with. I believe that there must be some type of processing routine that would be able to interpolate these sharp gradations to essentially synthesize many more gradations in between. The only thing I have tinkered with is a blurring function which works but of course destroys all detail. I know I am not the only one to have this problem so I hope someone has a trick to apply. Suggestions?