Resolution
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Resolution

The a7R II was the first camera to offer a BSI-CMOS full-frame sensor, when it was released last year. The additional resolution compared to the a7 II makes it possible to print significantly larger images, and of course there's lots of scope for cropping.


Like all of the cameras in Sony's a7-series, the a7 II and a7R II are both built around full-frame CMOS sensors, and the a7 II uses the same 24MP as its predecessor, the first-generation a7. The a7 II's sensor is perfectly capable, and can deliver excellent image quality, but it's not a patch on the 42MP sensor in the a7R II.

The increase in resolution isn't the only reason we say that. The flagship a7R II features a back side illuminated (BSI) CMOS sensor, which offers significantly greater dynamic range, far better low light performance, and features 399 phase detection autofocus points (more on that later).