Archived posting to the
Leica Users Group, 2020/04/23
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Subject: [Leica] question about image viewing and profiles
From: reid at mejac.palo-alto.ca.us (Brian Reid)
Date: Thu, 23 Apr 2020 10:01:10 -0700
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.
Replies:
Reply from leica_r8 at hotmail.com (Aram Langhans) ([Leica] question about image viewing and profiles)
Reply from cartersxrd at gmail.com (CartersXRd) ([Leica] question about image viewing and profiles)
Reply from zoeica at mac.com (chris williams) ([Leica] question about image viewing and profiles)
Reply from don.dory at gmail.com (Don Dory) ([Leica] question about image viewing and profiles)
Reply from imra at iol.ie (Douglas Barry) ([Leica] question about image viewing and profiles)
Reply from jbmmllug at jbm.org (Jeff Moore) ([Leica] question about image viewing and profiles)
Reply from jhnichols at lighttube.net (Jim Nichols) ([Leica] question about image viewing and profiles)
Reply from kcarney1 at cox.net (Ken Carney) ([Leica] question about image viewing and profiles)
Reply from lluisripollphotography at gmail.com (Lluis Ripoll) ([Leica] question about image viewing and profiles)
Reply from photo at frozenlight.eu (Nathan Wajsman) ([Leica] question about image viewing and profiles)
Reply from photo.philippe.amard at gmail.com (Philippe) ([Leica] question about image viewing and profiles)
Reply from richard at imagecraft.com (Richard Man) ([Leica] question about image viewing and profiles)
Reply from sonc.hegr at gmail.com (Sonny Carter) ([Leica] question about image viewing and profiles)