Leica SL2 has a 47.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Maestro III processor. You can shoot at maximum resolution of 8368 x 5584 pixels with aspect ratios of and 3:2. SL2 has a native ISO range of 100 - 50000 which can be boosted to 50 - 50000 and it can save files in RAW format which gives you a wider room for post processing.
Leica SL2 is not the highest resolution Full frame camera. Blackmagic PYXIS 12K with its 98.8MP sensor is leading in this class. Check the comparison of Leica SL2 vs Blackmagic PYXIS 12K or take a look at Highest resolution Mirrorless cameras list.
High Resolution Mode
Leica SL2 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 187 MP MP 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 Leica SL2'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.
Let's look at how the size of the Leica SL2's Full frame sensor compares with other standard sensor sizes.
Comparison image of Leica SL2 Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Leica SL2 gives you at any given aperture.
You can
calculate
the exact depth of field for the Leica SL2
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.
