Re: camera profiles
Re: camera profiles
- Subject: Re: camera profiles
- From: Jack Bingham <email@hidden>
- Date: Mon, 06 May 2002 07:56:06 -0400
A good cook will tell you it is all in
the preparation.
Exactly my point.
Now you can create a profile with the "whatever" light source before hand in
a wonderfully control environment. Then use the profile time and time again,
no matter where you are doing. This is now called a "general profile". And
most manufacturers provide general profiles that are created in controlled
environments (I would think). So why profile any camera, why all you have
to do is gray balance. In addition, you do not need to color correct for
cast or contrast, etc.
Most manufactures provide what I would call canned profiles, those made from
one camera or a few and averaged. A custom profile is designed to deal with
one camera. What light you shoot in after that does not matter so long as
you properly gray balance. Now lets not confuse things by bringing up
sunset. Of course you can not gray balance in the traditional manner, what
you want is a daylight gray balance. Depending on the camera there are many
ways to get a daylight gray balance and then still use the same profile. Let
us also not confuse the corrective value of a profile with bad lighting.
Unintentional casts caused by unbalanced light can not and will not be fixed
by profiling. How can you possibly place a 2 dimensional target in a scene
bathed in light from several directions of different color temperatures and
expect those many sources to cover that target equally. You can't. So your
target already does not represent the light falling on the scene. Some
portion of the target has a bigger cast than another, which will not be
representative of how those casts appear in the scene. Some colors will
receive blue light and some redder. Do you actuallu expect the software to
interpret this? You are expecting the light falling on this target to be
representative of the light falling on the scene but it is not. And
furthermore you are going to make GLOBAL corrections to the color of an
image based on very LOCAL conditions. THIS IS SILLY.
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