Nikon D70s has a 6.0MP APS-C (23.7 x 15.5 mm ) sized CCD sensor . You can shoot at maximum resolution of 3008 x 2000 pixels with aspect ratios of and 3:2. D70s has a native ISO range of 200 - 1600 and it can save files in RAW format which gives you a wider room for post processing.
Nikon D70s 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 Nikon D70s vs Fujifilm X-E5 or take a look at Highest resolution DSLR cameras list.
Nikon D70s DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. Nikon D70s sensor has been tested by DxO Mark and got an overall score of 50 for its image quality. You can find the details of their analysis of Nikon D70s here.
Let's look at how the size of the Nikon D70s's APS-C sensor compares with other standard sensor sizes.
Comparison image of Nikon D70s Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Nikon D70s gives you at any given aperture.
You can
calculate
the exact depth of field for the Nikon D70s
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.
