Thanks to an evolutionary leap in image processing power and efficiency, the a7R III combines a high resolution 42.4 MP back illuminated Exmor R CMOS image sensor with impressive shooting speeds at up to 10 fps with full AF/AE tracking, as well as beautiful 4K HDR video quality, wide 15 stop dynamic range and high sensitivity with noise reduction of almost a full stop. Lens Compatibility Sony E mount lenses. Aspect Ratio : 3:2