Subject | Re: Lenses and sharpening |
From | Floyd L. Davidson |
Date | 09/15/2014 22:33 (09/15/2014 12:33) |
Message-ID | <87y4tkzksh.fld@barrow.com> |
Client | |
Newsgroups | rec.photo.digital |
Follows | nospam |
Followups | nospam (4h & 22m) PeterN (18h & 59m) > Floyd L. Davidson |
nospamNon-destructive is wonderful. It especially impresses Chicken Little, Humpty Dumpty and nospam and probably other cartoon characters.
In article <8738bs2076.fld@barrow.com>, Floyd L. Davidson <floyd@apaflo.com>wrote:nospamFloyd L. DavidsonnospamFloyd L. DavidsonFloyd L. Davidsonnospam
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.
it is to the user, which is what matters.
in other words, the user sharpens today and then tomorrow or next month or whenever, they can readjust it or remove it entirely. that means to the user, it's reversible.
that's why a non-destructive workflow is so powerful.
I don't see the term "virtually reverses" in that sentence.Floyd L. Davidsonnospam
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.
not perfectly. you even said 'virtually reverses' in your description.
that's another way of saying 'there is some loss.'
Obviously you didn't understand what the term "reversible" means, and thought non-destructive is the same. It isn't.Floyd L. Davidson
In article <87bnqh1mby.fld@barrow.com>, Floyd L. Davidson <floyd@apaflo.com>wrote:nospam
Not the case. It is the high pass sharpen tool that is the inverse of blur. They can use the exact same algorithm with different parameters. Using one and then the other virtually reverses the results.Floyd L. Davidsonnospam
If the sharpening is done with UnsharpMask that cannot be done. USM is not reversible.
in a destructive workflow that is true.
in a non-destructive workflow, it is not true.