When I try to find the optimal values for CA correction, I find that the different "slices" would require different values. Which would be the best way to proceed:
1-Correct all slices individually before stacking
2-Correct all slices by the same value, before stacking, choosing the value of the slice where CA is most obvious, typically branches against sky, distant or near infinity
3-Correct CA AFTER stacking
?
My workflow is: shooting raw, converting with Raw Developer, CA correcting the TIFs in Adobe Camera Raw (CS3).
So far, I have been lazy and used method 2. Method 1 might amount to a lot of work depending on the number of slices. Also, I wonder if the difference between slices might be counterproductive, say if I don't hit the real optimum in one or more slices.
Stas Yatsenko from Helicon Help has answered "I think the results would be pretty [much] the same, but I would prefer to correct CA before stacking."
I would like your input on this.
Kind regards - Hening.
