I have an old image I am trying to correct. It sunset image with a nice gradient from the sunset colors at one end of the sky to a deep blue up above.
The trouble is... there is "banding" within the sky. As if the color pallette was too small to handle the number of colors in the sky.
Plus, there are obvious jpeg artifacts. Not caused by re-editing, because I am working on the original. I think it is just because of the number of colors gradients across the sky.
My question is... how do you correct something like that?
I've found that if I use the "obvious solution" (gaussian blur seemed obvious to me) it actually makes the problem WORSE! It only marginally gets rid of the jpeg artifacts, but what's worse is that it serves to "solidify" the banding! The more I blur it, the more solid the banding lines become.
So far I have found that my best solution is to use motion blur and to try it at different angles. It seems to help spread out the banding a little ... softening the jpeg artificats along the way. But it just doesn't seem to do "enough" to solve the problem.
Any further ideas/tips?
Thanks!
David
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