Wednesday, December 05, 2007

why do I get only tree peaks on my histogram?

One regular question about the color balance coach target is: why do I get only tree peaks on my histogram?
as you can see on the left side of the hand-drawn graphics that the target is used facing the camera instead of facing the light. When you do so the difference of the light from one side to the other of each white patch changes until it reaches the amount of the next patch so you have a kind of one ongoing fading patch. As you can see now on the graphic on the second side on the right-hand side you have four peaks when the target is facing the main light remember the object of the color balance coach target is to measure the highlight to be sure that we do not get an over exposure of the light and the only way he to make this sure is to measure the highlight side with the target. So in the center of the drying you see the two side-by-side drawings one representing the target facing the camera and the other one representing the target facing the main light giving the proper exposure.
Enjoy your target and keep you posted with all your question how will answer them personally.
Jean François O'Kane,
TheStudioCoach.com