Originally posted by stormtech What Class A says as his deal breaker is the destructive editing. This is true, but an easy work around for me is to always work on a copy. I've always done that anyway partially I guess because I live in the boonies and brief power interruptions are common even when the sun is shining.
Unfortunately, working on copies (or using snapshots) is not a full solution.
The problem with copies is that reverting to them always means throwing away all edits from a certain point in time onwards.
Say I went for a particular set of sharpening parameters and then do many more edits, such as colour balancing, cloning, etc. Suddenly, I discover that my sharpening was too aggressive. If I go back to an unsharpened copy then I lose all subsequent edits. With a non-destructive approach, I simply go back to my sharpening settings and adjust them. All subsequent edits are still in place and I don't lose anything.
One could argue that adjustments like sharpening should always come last and hence redoing them does not imply losing anything, but
- There are a number of adjustments that compete for being best left as a last step, and
- I like to fix what is most wrong with an image immediately.
I wouldn't want to postpone certain edits in order to support better re-adjustments in the future, and hence be forced to work with a fuzzy, or noise image during most of the editing.