AW: Human color vision
AW: Human color vision
- Subject: AW: Human color vision
- From: Andreas Kraushaar via colorsync-users <email@hidden>
- Date: Tue, 14 Jan 2020 22:48:44 +0100
Dear all,
I was thinking if and what to say here. But after 15 years of heavy involvement
in international standardisation organisations (ISO TC130, ICC, CIE) I would
like to give me 2 cent here.
a) the gamut definition in standards that follow democratic rules (after long
and tedious discussions such as ISO, CIE, ICC) focusing directly or indirectly
on output devices (https://ttbs.isolutions.iso.org/obp/ui/#search and search
for gamut)
b) if you want to use it for input devices go to such working groups and
participate
Studying at RIT I learned that there are two "schools": One is in favour of the
idea to attribute an input device with a colour volume and the other isn't.
Ergo:
So if you cannot agree on a definition for input devices your arguments (or
patience or endurance) are not good/convincing enough.
Regards
Andy Kraushaar
Fogra Colour Management Symposium 2020 (#CMS2020) – 12/13. Feb. 2020
Matching colours – Matching people
https://www.fogra.org/CMS/
—————————————————————————
Dr.-Ing. Andreas Kraushaar
Abt. Vorstufentechnik
Fogra
Forschungsinstitut für Medientechnologien e.V.
Einsteinring 1a
85609 Aschheim b. München
Telefon: +49 89. 431 82 - 335
Telefax: +49 89. 431 82 - 100
E-mail: email@hidden
Internet: www.fogra.org
-----Ursprüngliche Nachricht-----
Von: colorsync-users
<colorsync-users-bounces+andreas.kraushaar=email@hidden> Im Auftrag
von Roger Breton via colorsync-users
Gesendet: Dienstag, 14. Januar 2020 18:25
An: email@hidden
Betreff: RE: Human color vision
Bob,
Call me nuts, but I'm actually looking forward to the day I'll have a cataract
removed for the very reason you mention, that experience of looking at the
world, all of a sudden, *without* yellow filters. I read the same account as
you described, in the color literature, that the sky takes on a stronger vivid
shade of blue and so on.
All I know about the Standard Observer is that it was made of two groups of men
but I have no details on their age... I guess they had "normal color vision" 😊
/ Roger
-----Original Message-----
From: colorsync-users
<colorsync-users-bounces+graxx=email@hidden> On Behalf Of
Bob-BTY via colorsync-users
Sent: Tuesday, January 14, 2020 10:42 AM
To: email@hidden
Subject: Human color vision
Many people don't seem to know that the lenses in the human eye start going
yellow with age. By the age of 50 most people are looking at the world through
yellow filters! I experienced this when having a lens replaced because of
cataract. The new plastic lens was clear, and when I came out of the operating
room, I could see that the dresses of the nurses (that were grey/white stripes
before) were now blue/white when I looked at them with the new lens. With the
yellow lens in my other eye they were still grey/white! A blue sky was now qite
vivid with the new plastic lens, not so with the old yellow lens. I played
about with Wratten filters to see how yellow my original lens was, but sadly I
can't find the details any more, and nnow have two clear plastic lenses. I
wonder how old the 'Standard Observer' was?
Bob Frost
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