Subject | Re: Lenses and sharpening |
From | Savageduck |
Date | 09/16/2014 10:34 (09/16/2014 01:34) |
Message-ID | <2014091601341644630-savageduck1@REMOVESPAMmecom> |
Client | |
Newsgroups | rec.photo.digital |
Follows | Eric Stevens |
Followups | Eric Stevens (19h & 49m) > Savageduck |
Eric StevensNot quite. You redirected the intended comment to *nospam*, If you agreed with him your snide response would have poked at Floyd.
On Mon, 15 Sep 2014 22:35:31 -0700, Savageduck <savageduck1@{REMOVESPAM}me.com>wrote:SavageduckEric Stevens
On 2014-09-16 02:59:40 +0000, Eric Stevens <eric.stevens@sum.co.nz>said:Eric StevensSavageduck
On Tue, 16 Sep 2014 04:36:08 +0200, android <here@there.was>wrote:androidEric Stevens
In article <87ppewz599.fld@barrow.com>, floyd@apaflo.com (Floyd L. Davidson) wrote:Floyd L. Davidsonandroid
nospam <nospam@nospam.invalid>wrote:nospamFloyd L. Davidson
In article <h2qe1at234ulkvm6u2bvbael7k3iht3vrm@4ax.com>, Eric Stevens <eric.stevens@sum.co.nz>wrote:nospamSavageduckEric Stevens
All adjustments made to *Smart Objects*, in Photoshop terms, are non-destructive.
I fully expect you to tell me I am wrong.
I will tell you that you are discussing a point which is not the point raised by Floyd. So too is nospam, but that is not surprising.
Floyd was referring to a reversible function: run it forwards and you get sharpening; run it backwards and you get blur. Or the other way around if you wish.
there are indeed such functions, but that doesn't matter to users. they want to edit photos, not learn mathematical theory.
when a user can modify an image and change it later, it's reversible and that's why it's called a non-destructive workflow.
Squirm all you like, but USM is well known to be a non-reversible function.
Oki... A reversible function and ditto workflow ain't the same thing. ;-)
I doubt if nospam can get his mind around that thought. :-(
You might have notice that android addressed that comment to Floyd.
So what? I was agreeing with him.
Not at all. If you reread what I wrote below, you will see that I have a firm grasp of each of the proposed concepts in this thread.SavageduckEric Stevens
A non-destructive workflow makes that irreversible function very reversible indeed.
You are fudging word meanings. In fact you seem to be demonstrating that you too don't know the difference between a reversible function and a reversible work flow.
Floyd specifically addressed high pass sharpening (HPS) in response to Alfred's query regarding USM. We ended up discussing HPS & USM and the qualities of both. I know what Floyd was talking about.SavageduckEric Stevens
Once that working copy has had USM applied, the layers merged, and compressed into a JPEG (a destructive action) then Floyd is correct, the function can no longer be reversed. However, Floyd doesn't see the concept of the non-destructive workflow because he doesn't, or appears not to use one. He certainly isn't using what is available to those running either Lightroom or Photoshop CS6/CC/CC 2014, and ignores that some here have the ability to take advantage of a non-destructive, or "reversible" workflow because of the software tools installed on their computers.
Floyd wasn't even talking about it! He was talking about different sharpening algorithms.