Pentax K-70 has a 24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features PRIME MII processor. You can shoot at maximum resolution of 6000 x 4000 pixels with aspect ratios of and 3:2. K-70 has a native ISO range of 100 - 102400 and it can save files in RAW format which gives you a wider room for post processing.
Pentax K-70 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 Pentax K-70 vs Fujifilm X-E5 or take a look at Highest resolution DSLR cameras list.
High Resolution Mode
Pentax K-70 has a special High Resolution mode where the camera takes multiple images of a scene while moving its sensor using the sensor shift image stabilization system and combine them automatically to create a much higher resolution image. This feature works best with static scenes and using a tripod is a must to minimize stitching artifacts.
Anti-Aliasing Filter
Another important feature about Pentax K-70'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. But wait! K-70 takes care of this problem for you. It has a unique and adjustable Anti-Aliasing Filter Simulator mode which can create the effects of a Low Pass filter electronically when you want to avoid moiré.
Let's look at how the size of the Pentax K-70's APS-C sensor compares with other standard sensor sizes.
Comparison image of Pentax K-70 Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Pentax K-70 gives you at any given aperture.
You can
calculate
the exact depth of field for the Pentax K-70
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.
