[rollei_list] Color casts; was: Ford motor and Rolleiflex
- From: Aaron Reece <oboeaaron@xxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Tue, 5 Dec 2006 15:25:41 -0500
On Dec 5, 2006, at 3:01 PM, Richard Knoppow wrote:
In life the eye continuously adapts for color. Its easy to
demonstrate this to your self. Just look through a camera filter
for a minute or two and then look without it. I have also had the
experience of having my eyes mis-matched, for instance, when hiking
in the late afternoon with the sun on one side. The eye on the sun
side becomes quite blue. It takes a minute of two for this to wear
off.
This often happens to me after viewing images on a light table for
several minutes. Since I am right-eyed, when I look up my right eye
is practically blind until the iris opens up again, while my left eye
continues to function normally. The effect is somewhat dizzying.
On the other hand, what you describe would seem to be a function of
the brain processing the visual information it is fed. While I am no
expert, I don't know of any mechanism in the eye itself for color-
correction.
For me, one of the interesting side effects of getting fairly deeply
into black-and-white photography was a much heightened sensitivity to
subtle differences of hue in color subjects; while this sounds
paradoxical, such differences can become more pronounced when strong
color contrast filters are used.
Best regards,
Aaron
---
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