Subject | Re: Lenses and sharpening |
From | nospam |
Date | 09/18/2014 04:47 (09/17/2014 22:47) |
Message-ID | <170920142247107508%nospam@nospam.invalid> |
Client | |
Newsgroups | rec.photo.digital |
Follows | Savageduck |
Followups | Eric Stevens (2h & 19m) > nospam |
and that genius is completely wrong.SavageduckEric StevensEric StevensSavageduck
No one who understood what we were trying to talk about would claim that a JPG conversion is a reversible process.
?but that genius Floyd did.
I've had a look and I cant see where. Could you refer me to the message?
With pleasure.
That wasn¹t too tough to find: Posted: Mon, 15 Sep 2014 13:44:18 -0500 Message ID: <8738bs2076.fld@barrow.com>
Wherein Floyd stated the following:
³A 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.²
Note, the words, ³save it as a JPEG,².
As I said, that genius Floyd did.