Re: Target for camera profiling?
Re: Target for camera profiling?
- Subject: Re: Target for camera profiling?
- From: Roger Breton <email@hidden>
- Date: Sun, 18 Jan 2004 11:29:06 -0500
Bertho,
>
One thought: Is it possible and practical to buy the just the target from
>
ColorEyes and use it with the GM ProfileMaker Pro?
I am not sure if they sell it separate and if they do, I am not sure PMP has
the same empirical tweaks that the 20/20 software has?
>
I use the studio strobes in two soft boxes at 45 degree angle and replace the
>
target with a uniformly white sheet and I set the camera to show "flashing
>
high lights". It is very fast and easy to see the uniformity, or lack
thereof, of the lighting.
This is a neat trick for assessing eveness of the target illumination but
have you found a fix? My take on this is twofolds: keep the camera at a
constant position relative to the target, shoot 24 images each time moving
each patches at the same exact position relative to the camera. Then cut and
paste each frame into the regular ColorChecker layout in Photoshop. Long but
flawless (I think). Second approach is to use the "mini" ColorChecker target
which measures a mere 3" wide by 2" high: how much 'significant' lighting
variation can you possibly have over such a tiny subject area? I'd just wish
PMP and the others cd profiling apps started supporting this target
directly...
Regards,
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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