Sony A99 II specifications
Sensor 42.4MP full-frame Exmor R CMOS sensor (35.9 x 24.0mm)
Focal length conversion on lens 1x
Memory 1x multislot for Memory Stick Pro Duo/SD, 1x SD card slot
Viewfinder XGA OLED, 2,359k dots
Max video resolution 4K (UHD)
3,840 x 2,160
ISO range 100-25,600
Autofocus Hybrid Phase Detection AF, 79-point/399-point, 15/79 cross-type
Max burst rate 12fps
Screen 3-inch articulating TFT,
Shutter speeds 30-1/8,000 sec, Bulb
Weight 849g (body only, with battery and memory card)
Dimensions 143 x 104 x 76mm
Power supply NP-FM500H lithium-ion battery (supplied)
Sony A99 II lab tests
We use Imatest and DxO Analyzer hardware and software to test cameras for their colour accuracy (colour error) signal to noise ratio (the amount of noise in the images) and dynamic range (their ability to capture detail in very bright and dark areas). We also pick three rival cameras to test them against.
We tested the Sony A99 II against four key rivals: the Canon EOS-1D X II, Nikon D5 and Sony A7R II. The A99 II came out on top in the colour error test, producing the most neutral colours of all four cameras we compared. To be fair, all but the Nikon D5 scored very well.
Signal to noise ratio
The A99 II came third for noise, though the results were still good. The high megapixel count and small light loss through the translucent mirror are the culprits.
The dynamic range figures are much closer and unlikely to be apparent in real-world results. The larger photosites of the EOS-1D X II appear to yield a small advantage.