Archived posting to the Leica Users Group, 2020/04/23
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Brian, I use a color-calibrated ColorEdge CE240W (although I have not refreshed the color ICC on this PC for a while). In any case, the 2nd one has better shadow separations, more values in ZONE II and III. On Thu, Apr 23, 2020 at 10:01 AM Brian Reid <reid at mejac.palo-alto.ca.us> wrote: > I've been looking into complaints that the LUG gallery is muddying many > images that Bill Clough is posting. They don't look muddy to me, but I > believe the people who say that they see mud. > > After some research, I determined that the majority of his images in the > gallery are tagged with the ICC profile "Gray gamma 2.2", which is put > there by his film scanner. I have a profile by that name on my computer, > so when I clicked on his images, the conversion was done correctly by my > image viewing software and I saw what he intended. > > I wonder how many LUG people are seeing mud. Do you see any significant > difference between the image quality of these two images: > > A: > http://gallery.leica-users.org/d/486424-2/Harvest_+Estes+Park_+1987.jpg > > B: > http://reid.org/~brian/images/Estes%20Park%20with%20sRGB%20profile.jpg > > On my screen, those images look very similar but not totally identical. > I guess it depends on which software component is doing the color > transformation. > > If you don't see much of a difference, that means that your computer is > dealing successfully with the unusual but not illegal profile "Gray > gamma 2.2", which is intended as a Photoshop preview-mode pseudo-profile > and not an imbedded profile. I guess nobody told this to the > manufacturer of Bill's scanner. > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- // richard http://imagecraft.com Beyond Arduino - When you're ready to get serious... JumpStart C Tools for Atmel AVR and Cortex-M, The Better Alternative