Re: Why 2 degree observer measurements for ICC profiles?
Re: Why 2 degree observer measurements for ICC profiles?
- Subject: Re: Why 2 degree observer measurements for ICC profiles?
- From: Peter Miles via colorsync-users <email@hidden>
- Date: Sat, 27 Jul 2024 08:04:37 +0000 (UTC)
Hi Wayne.I can relate to the increased short wavelength / UV sensitivity with a
clear lens. My eye surgeon was very interested in my feedback around how the
new lens affected my color perception, given my job.About a month after my
surgery I emailed my surgeon color graded photo of an image in a GTI viewing
booth, but in two views. The color as it appeared to each eye.I have attached a
link to it below.
I did wonder at the time of selecting a lens, if the eye surgery folk that
engineer the spectral transmission of those lenses had heard of the two degree
standard observer.
Could be a great collaboration there for some folk on this list maybe? :-)
Peterhttps://drive.google.com/file/d/1Xoqdyc2LuKywA7rkodHEn-zJ71heIvw9/view?usp=drive_link
On Tuesday, 23 July 2024 at 12:41:49 pm NZST, Wayne E. Bretl via
colorsync-users <email@hidden> wrote:
The difference between a natural lens, a replacement lens with UV
absorption, and a clear replacement can be very large in daylight vs. other
sources. I got UV absorbing lenses in both eyes, and during the time I had
only one replacement, the difference was quite noticeable. A colleague who
had one UV absorbing and one clear reported some extreme differences. I had
a khaki colored parka that was mainly cotton, but synthetic knit for the
collar. In daylight, I saw a slight mismatch, but he saw a strong purple
cast to the collar.
I wear photo gray glasses, and I can see an amber tint under artificial
light and a much stronger amber tint under daylight. My natural lenses had
browned to the point that I could not see the tint.
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