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Old 29-01-2009, 08:42 PM
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CometGuy
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Canon Sensors - Quantum Efficiency

These are the first reasonably precise measurements done of Canon CMOS Quantum Efficiency that I've seen:

http://astrosurf.com/buil/50d/test.htm

Whats it all mean? In a nutshell, the Canon CMOS sensors are 1/5 as sensitive as the best monochrome sensors. This difference is mostly due to the bayer colour filters which cover the pixels. I guess we all knew that but its interesting to see the hard data for once!

Interestingly the new 5D is quite a big improvement over the old 5D.

Terry
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