24MP. APS-C sized sensor. L-Mount. The CL has also Leica's L-mount. Same mount as the fullframe Leica SL family of cameras and the future Panasonic and Sigma cameras with L-Mount. THe Leica CL shares the same sensor as the TL2, and is primarily differentiated from its sister model by its user interface, which focuses on physical controls as opposed to touchscreen, and presence of an integrated viewfinder. Here is a video from the camera store (still with the old team Chris Niccolls & Jordan Drake) The video is not that positive about the CL. I would be interested to hear opinions of other users of the Leica CL in this thread to get a better feeling for the pro and cons of this camera.