I have the A55 and have very much enjoyed using it. I would like to move up to the higher pixel count of the newer Sonys. However, I am concerned about noise. I shoot raw, and almost never use a flash. I sometimes shoot at 1600 and have been very pleased with the results. Will I still be satisfied with the noise level at 1600 if I move to the A65 or NEX7?
I had the A700 and now have the A65. Looking at the photos at 100 % there seems to be as much noise as before; of course the photos are much bigger now. Shooting almost only raw I avoid more than ISO 1600. For stationary objects you have an ace up your sleeve: multiframe auto iso for jpgs.
At first I was a little disappointed that the high isos weren't better, but meanwhile I appreciate that the sensor gives you in return a splendid resolution and the possibility of cropping.
Here are some examples from the Wartburg (Eisenach, Germany):
Multiframe ISO Auto= 4000, JPG
100%
Multiframe ISO Auto = 6400, JPG
100%
Raw ISO 1600 Luther's desk
100%
Multiframe ISO Auto = 3200, JPG
100%