Re: Nikon D-1 Colorsync workflow
Re: Nikon D-1 Colorsync workflow
- Subject: Re: Nikon D-1 Colorsync workflow
- From: email@hidden (Bruce Fraser)
- Date: Tue, 31 Oct 2000 16:07:49 -0700
At 12:48 PM -0800 10/31/00, John Gnaegy wrote:
CD said:
easily convert digicam shots under any light
conditions as well... the neg film having the same undefined
elements as the
digicam shots
Bruce said:
about every photographer I know has wound up concluding that doing a
gray-balanced capture into a well-chosen working space and editing
from there is an easier and more practical alternative.
Hmm, thanks for those insights, good food for thought. Is the
difficulty in profiling due to intentional auto-correction within
the camera of white point, maximum brightness, low light
sensitivity, etc? I can see how you couldn't profile a radically
self-adjusting device. If that's the case then you could get around
it with a camera that didn't self-adjust, or by turning those
features off, or a camera that generate it's own profile describing
it's current behavior picture by picture as it changes white point,
gain, whatever. So that problem might be solvable. If on the other
hand the inability to pin down the behavior is due to some inherent
instability of response of the image chip, then that might be
trickier to solve. I don't know, which do you think it is, or is it
something else?
(PS Sorry for the illegibility of these digests, all those extra
lines preceding each post are pretty annoying I know. We're working
on it.)
---
John Gnaegy
email@hidden
colorsync testing, colorsync user list
Most of the color one-shot cameras do some kind of auto white-balance
(of varying efficacy, particularly when the photographer puts his or
her finger over the sensor), so they fall into the radically
self-altering category. Most of the low-end ones also have an
undefeatable autoexposure, and even when you can turn autoexposure
off it's often not a good idea to do so.
The chips tend to have a much more linear response than film, so
long-term it's a solvable problem, but I think for outdoor shooting
the camera will need to build a profile for each capture. I've seen a
few spectrophotometer designs that could probably be embedded in a
camera at some point so it's not totally far-fetched, but it's a ways
out.
Bruce
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email@hidden