Google| Subject | Re: Lenses and sharpening |
| From | PeterN |
| Date | 09/20/2014 21:57 (09/20/2014 15:57) |
| Message-ID | <lvkm5a01unl@news4.newsguy.com> |
| Client | |
| Newsgroups | rec.photo.digital |
| Follows | nospam |
| Followups | nospam (1h & 12m) |
On 9/19/2014 12:51 PM, nospam wrote:
nospamThe sad thinkg is you you beleive it. And What Dan wrote in hiis book is exactly on point.
In article <lvharh060h@news4.newsguy.com>, PeterN <peter@verizon.net> wrote:nospamPeterNEric StevensnospamPeterNSavageduck
I have found that using high pass on the luminiscence layer in LAB tends to minimize halos.
Actually it is a good idea to do any/all/most sharpening on a luminosity layer, LAB or not.
not always, since the conversion to lab and back is not lossless.
Not strictly correct:
https://www.ledet.com/margulis/ACT_postings/ColorCorrection/ACT-LAB-damage.h tm
">I have always thought that moving from either CMYK or RGB to LabnospamEric Stevens
and back was a damage free process, that is, you would end up with the same color co-ordinates when you arrived back from Lab mode.
"RGB>LAB>RGB is damage free, but CMYK>LAB>CMYK is not. The damage isn't all that great, so in many images it pays to come out of CMYK so as to take advantage of LAB's strengths; sharpening, however, is not one of these cases. .... Dan Margulis"
But you sould know that nosense knows much more than Dan Margulies.
i do, as do most people, but that's not the point.
Show me a repeatable expiriment. And I will admit being wrong. -- PeterN
09/13/2014-
