[Leica] question about image viewing and profiles

[cartersxrd at gmail.com (CartersXRd)]

identical

ric


> On Apr 23, 2020, at 1:01 PM, 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.
> 
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