Pentax KF 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. KF 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 KF 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 KF vs Fujifilm X-E5 or take a look at Highest resolution DSLR cameras list.
High Resolution Mode
Pentax KF 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 KF'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! KF 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 KF's APS-C sensor compares with other standard sensor sizes.
Comparison image of Pentax KF Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Pentax KF gives you at any given aperture.
You can
calculate
the exact depth of field for the Pentax KF
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.
