No, You're spot on. The author states that this is "an unmodified picture, straight off the digicam". Unfortunately for his test, this means the light passed

No, You're spot on. The author states that this is "an unmodified picture, straight off the digicam". Unfortunately for his test, this means the light passed through a Bayer filter, which uses a pattern of "50% green, 25% red and 25% blue": http://en.wikipedia.org/wiki/Bayer_filter http://en.wikipedia.org/wiki/Bayer_filter