You can\'t do that, though...you have no idea what the lighting variation might be...its not hard for the lighting to have fluctuations and such. They probably use the same exposure compensation and shoot in Av
If you look at DxO, they measure actual ISO vs nominal ISO, and they actually show that the GX1 is MORE sensitive than the NEX7 at the same ISO.
Click on measurements, then ISO sensitivity. The SNR graphs echo what you see in the DPReview samples...namely that per pixel noise is very similar between the two, with the NEX 7 having a small edge in print noise due to its higher resolution.
Of course DxO doesn\'t tell you about what the noise looks like at all. To me, they look really close at the pixel level for most tones, with the NEX having superior shadow noise and detail at the same ISO. Still, the GX1 is a great little camera, and I love mine. I have no problem using up to 3200 if needed, and even a well exposed 6400 shot will make good smaller prints (8x10)...even 12,800 can make good 5x7 prints and web shots.
Feb 15, 2012 at 07:26 AM
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