Re: Human color vision
Re: Human color vision
- Subject: Re: Human color vision
- From: David Scharf via colorsync-users <email@hidden>
- Date: Tue, 14 Jan 2020 17:54:00 -0800
You'll finally be able to see violet again!!!
DAVID SCHARF PHOTOGRAPHY
*DAVID SCHARF
*
On 1/14/20 9:25 AM, Roger Breton via colorsync-users wrote:
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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