Samsung NX200 has a 20.0MP APS-C (23.5 x 15.7 mm ) sized CMOS sensor . You can shoot at maximum resolution of 5472 x 3648 pixels with aspect ratios of 1:1, 3:2 and 16:9. NX200 has a native ISO range of 100 - 12800 and it can save files in RAW format which gives you a wider room for post processing.
Samsung NX200 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 Samsung NX200 vs Fujifilm X-E5 or take a look at Highest resolution Mirrorless cameras list.
Samsung NX200 DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. Samsung NX200 sensor has been tested by DxO Mark and got an overall score of 69 for its image quality. You can find the details of their analysis of Samsung NX200 here.
Let's look at how the size of the Samsung NX200's APS-C sensor compares with other standard sensor sizes.
Comparison image of Samsung NX200 Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Samsung NX200 gives you at any given aperture.
You can
calculate
the exact depth of field for the Samsung NX200
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.
