The latest refinements in Translucent Mirror Technology from Sony make the SLT-A77 (α77) and SLT-A65 (α65) the quickest, most responsive interchangeable lens cameras in their class. Revised ...

The Sony A900 also does better than the A77, though that's also not a surprise since it too has larger photosites, as both the D3X and A900 are full-frame models with 5.9µm photosites.

Above, we can see that the NEX-7 doesn't do quite as well as the Olympus E-P3 at the pixel level, at least up until ISO 1,600 where the Sony starts to pull ahead. Keep in mind the E-P3 uses a 12 ...