Not exactly a new idea.
This isn't exactly a new idea, Olympus added a separate sensor to sample ambient light for white balancing all the way back in 2003.
http://www.lonestardigital.com/E1.htm
This isn't exactly a new idea, Olympus added a separate sensor to sample ambient light for white balancing all the way back in 2003.
http://www.lonestardigital.com/E1.htm