Originally Posted by PhotoDave1
I seem to remember a series of threads about Custom White Balance and a couple of members had put up photos of what looks like a White Balance card and it was white, gray, and black.
Can anyone tell me what this gizmo is, what it is used for, how it is used, and where can I get one?
I've been using a custom target like this ever since I went digital many years ago. I use the Photovision one because its the best and comes with a 1 hour DVD. By the way the DVD has about 6 times the material of the on line sample from the DVD. I would have given you some links to the several posts that I've made to G1 on the subject, but I couldn't seem to get the Forum search to work.
Essentially the gizmo (target) is shot full frame so it fills your viewfinder. Then you look at the histogram. You want to see three full spikes. If one spike is missing or clipped, then adjust your exposure and shoot the target again. When you get three full spikes and they are as far right on the histogram as you can get them, then you have the optimal exposure. However, you may still need to adjust up or down up to 1/2 stop based on the primary subject tones. This is all covered in detail in the DVD with a number of different examples. You use the final calibration target shot to set your custom white balance for the scene.
Photo of Dee with the target.