If I really need a good WB, I shoot a gray or white card. Good Lord only knows what goes on in the cameras…
The camera feature i’ve really come to appreciate is white balance measurement in the presets. Push a button, point the camera at a white or gray thing, and pretend to take a picture; instead, the camera collects the patch, computes multipliers, and stores them in the preset. Gee, what’ll they think of next??? 