Review on Canon EF 50mm f/1.4 USM lens, black by Yusri Mohd ᠌

-HA. At 1.4 in difficult conditions there can be huge purple highlights. 1.8 inferior to STM. Moreover, in STM XA at ​​F2 is almost invisible, and 50 / 1.4 is pulled up only to F2.8. -Vignetting on cameras with a full frame sensor. Here, on the contrary, at f1.8 50 / 1.4 shows a slightly better result than STM and also leads a little at other apertures. - Circle of confusion. 50 / 1.4 has 8 aperture blades, while STM has one less and one would think that the younger brother would be worse here, but no ! In STM, a rounded diaphragm and nuts begin to appear only with Ф4-4.5, and in 50 / 1.4 nuts will go with a minimum preload. The focusing ring does not rest on infinity as on old manual optics, but this is also found on Elks.