The process is quite easy. But let's first talk about why you would use custom white balance.
If you are in a situation where you want your white balance to be correct in camera and you will be shooting in the same location with the same lighting situation, you may want to use custom white balance. I wouldn't use this feature for shooting an event where the lighting would change from one scene to the next. However, if I were doing a product shoot in a studio where the lighting would be the same, this might be an excellent option.
| This photo has nothing to do with the post, but since this is a photo blog... |
You can actually save more than one custom white balance setting and select them just as you would any preset.
Hope this helps. Have a safe and happy New Year's eve!
