The Sony A7C R is an excellent underwater camera known for its high image quality and compact size. It has a 61-megapixel full-frame sensor that captures amazing detail and a strong autofocus system, making it user-friendly for underwater photography. While it offers great dynamic range and video recording capabilities, its single SD card slot and smaller electronic viewfinder may be drawbacks for some photographers. Overall, the A7C R is a great choice for divers who prioritize image quality and portability.