Sony A99 II has a 42.0MP Full frame (35.9 x 24 mm ) sized BSI-CMOS sensor and features Bionz X processor. You can shoot at maximum resolution of 7952 x 5304 pixels with aspect ratios of 3:2 and 16:9. A99 II has a native ISO range of 100 - 25600 which can be boosted to 50 - 102400 and it can save files in RAW format which gives you a wider room for post processing.
Sony A99 II is not the highest resolution Full frame camera. Blackmagic PYXIS 12K with its 98.8MP sensor is leading in this class. Check the comparison of Sony A99 II vs Blackmagic PYXIS 12K or take a look at Highest resolution DSLR cameras list.
Sony A99 II DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. Sony A99 II sensor has been tested by DxO Mark and got an overall score of 92 for its image quality. You can find the details of their analysis of Sony A99 II here.
Anti-Aliasing Filter
Another important feature about Sony A99 II's sensor is the lack of anti-alias (Low-pass) filter. Removing anti-aliasing filter increases the sharpness and level of detail but on the other side it also increases the chance of moiré occurring in certain scenes.
Let's look at how the size of the Sony A99 II's Full frame sensor compares with other standard sensor sizes.
Comparison image of Sony A99 II Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Sony A99 II gives you at any given aperture.
You can
calculate
the exact depth of field for the Sony A99 II
at any focal length, aperture and subject distance, including the hyperfocal distance
for landscapes and the very shallow focus zone you get with long telephoto lenses.
