On 2014-09-15 18:44:13 +0000, (Floyd L. Davidson) said:

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.

Certainly not as a saved JPEG. However, there are ways of readjusting
USM, or removing it if you use *Smart Objects* in PS, or even just
regular adjustment layers in PS or other software saved with layers
intact as a PSD or TIF.

--
Regards,

Savageduck