Sony a7m4. According to Sony's product information, the shooting quality of Sony a7m4 is very good. The sensor is full-frame, with 33 million effective pixels. It has 693 phase focusing points and 425 contrast focusing points. It has a five-axis body defense with a compensation effect of 5.5 levels. Shake-shaking technology, with the characteristics of high pixels and high dynamic range, can better avoid shaking when shooting handheld, and the straight-out effect is very good. The camera is straight out, which means "the original appearance after shooting without any post-production".