Quote:
Originally Posted by Atmos
There is 4x the amount of light from F/1.4 to F/2.8.
Each pixel of the D700 covers 4.67x more area.
Not taking QE into consideration that means that every pixel on the D700 would be receiving 18.67x more light!! I have taken a wild stab in the dark but with an ~10 year increase in technology the QE may be light 0.4 vs 0.6 or a 50% increase. This brings the overall system closer to 12.4x increase in detected light per pixel.
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Hi Colin,
I'd say
that's a reasonably good stab, in terms of percentage increase. On Sensorgeninfo the D700 lists with a QE of 34% with the D7100 at 52%. So a 53% increase over the years. Unfortunately no D7200 QE data is listed there, but that's likely to be the ballpark.
For further info, see
http://www.sensorgen.info/
Best
JA