I wanted to take a picture of the two OWC Mercury On The Go drives connected to my iMac, which I thought looked kind of cool. I wasn’t too pleased with the automatic white balance (right image), so I used my White Balance Lens Cap to measure the white balance, which resulted in a much worse image (left side).
Although the left image looks pretty bad, it’s actually more accurate, since the incandescent lighting in my office gives a visible off-color tint. I ended up going with the auto white balance image, since it looks more natural. Of course I could easily correct either one to make the iMac pure white with Aperture’s color correction tool, but I prefer the slight tint.