Sony NEX-3 has a 14.0MP APS-C (23.4 x 15.6 mm ) sized CMOS sensor and features Bionz processor. You can shoot at maximum resolution of 4592 x 3056 pixels with aspect ratios of 3:2 and 16:9. NEX-3 has a native ISO range of 200 - 12800 and it can save files in RAW format which gives you a wider room for post processing.
Sony NEX-3 is not the highest resolution APS-C camera. Fujifilm X-E5 with its 40.0MP sensor is leading in this class. Check the comparison of Sony NEX-3 vs Fujifilm X-E5 or take a look at Highest resolution Mirrorless cameras list.
Sony NEX-3 DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. Sony NEX-3 sensor has been tested by DxO Mark and got an overall score of 68 for its image quality. You can find the details of their analysis of Sony NEX-3 here.
Let's look at how the size of the Sony NEX-3's APS-C sensor compares with other standard sensor sizes.
Comparison image of Sony NEX-3 Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Sony NEX-3 gives you at any given aperture.
You can
calculate
the exact depth of field for the Sony NEX-3
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.
