ZF has excellent color, good Jiao Wai, good sharpness and good mechanical properties, and synthesis should be the first.

Sigma 50 1.4, if it's not out of focus, it's a great shot. Jiao Wai is very beautiful, but it is not mechanical, and it is very fuzzy.

Ais 50 1.2 fully open is basically useless. When it is reduced to 1.4, it is no different from ais 50 1.4, and the symbolic meaning is greater than the actual meaning.

Compared with 1.4D, the aperture of 50 1.8D is smaller, and its mechanical performance is worse, but the image quality is no different. The backwardness of 4G is that Jiao Wai is almost behind, and everything else is similar. For example, the so-called nano-coating on 1.4G has not shown any advantages.