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Old September 15th 14, 07:44 PM posted to rec.photo.digital
Floyd L. Davidson
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Posts: 5,138
Default Lenses and sharpening

nospam wrote:
In article , Floyd L. Davidson
wrote:

UnSharpMask is not reversible.

it is with a non-destructive workflow.


I'm sorry that you don't understand the meaning of that.


i absolutely do know the meaning, since it's all i use.

it's you who doesn't understand what a non-destructive workflow means


A non-destructive workflow means you can *undo* and then *redo*.

That is not a reversible function.

For example, you can add sharpening with a high pass
sharpen tool to an image, save it as a JPEG, send it to
someone else, and they can use a blur tool to reverse
the sharpen.

If the sharpening is done with UnsharpMask that cannot
be done. USM is not reversible.

--
Floyd L. Davidson http://www.apaflo.com/
Ukpeagvik (Barrow, Alaska)