Traditionally you would gel the lights and this works, however gels also cut the light output of your lights. One real benefit of doing this trick is that by using your white balance shift in-camera, you won’t cut any light output. This is under the assumption that you are using one certain type of light and not mixed lighting with multiple temperatures. If you are using a set of lights that are all the same color temperature, utilizing your White Balance Shift in-camera is a simple way to correct an unattractive color cast that your lights may be giving off.
** Not all cameras have this option, so you’ll want to check first to see if your camera is equipped to do this. Do you still have your user manual?correct color cast in camera, DSLR, how to correct color cast, how to white balance shift, Tuesday Tip, tutorial, white balance shift