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Re: Lenses and sharpening

Sandman
SubjectRe: Lenses and sharpening
FromSandman
Date09/18/2014 10:20 (09/18/2014 10:20)
Message-ID<slrnm1l5u9.881.mr@irc.sandman.net>
Client
Newsgroupsrec.photo.digital
FollowsFloyd L. Davidson

In article <87ioklwoi0.fld@barrow.com>, Floyd L. Davidson wrote:

Savageduck
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.âEUR

Note, the words, âEURoesave it as a JPEG,âEUR.

As I said, that genius Floyd did.

Floyd L. Davidson
So we now we know you can't read.

What I said was that *high pass sharpen is reversible*. It is, even if a few people are unable to either understand or accept that it is.

You're ignorant. HPS is *NOT* reversible with gaussian blur if the original image has been compressed as a JPG in between the actions. You know absolutely nothing about images, image data or image processing. Stop trying to fool yourself.

-- Sandman[.net]