Originally posted by Wheatridger Thanks for the replies. Custom white balance takes extra time, and defeats my goal of having consistent WB in every room, day after day.
I'm trying to follow your meaning here (blue). Custom White Balance takes about 10-30 seconds at the most. It will take less the more you practice it.
But the part that baffles me is "defeats consistent WB".... no, i don't think so.
Setting CWB tells the camera what WHITE is in that particular lighting. So, you will always be exposing for WHITE WHITES regardless of the lighting for the room. In fact, setting CWB will give you more consistent color across rooms/lighting, because whites will actually remain white in different lighting.
In the two photos you posted in #4 above, the left photo appears to have the foreground lighted by daylight flash. The room in the background has strong actual daylight streaming in the window. Even though the incandescent ceiling bulb is on in the rear room, the daylight is stronger and the two rooms remain relatively in balance.
In the one on the right, it looks like you're again using a daylight flash but an incandescent bulb in the room through the door. And with yellowish toned walls in the first place. So, naturally they contrast due to the wide differences in color of the strongest lighting for each room.
What
enoeske said is true: "No camera can white balance different colored light sources. Its simply not possible."
You can use a yellow/golden gel or film on your flash as he suggests to balance the color of the lights, then use Tungsten to get "white".
An alternative solution would be to use a larger aperture prime - you can readily find manual lenses for the purpose - and take existing light photos for which you use a CWB to get white in every shot consistently.
Or, it could be that I have failed to comprehend what it is you are trying to do. In that case, sorry I wasn't able to help.