The supported resolutions for Canon M50 short film shooting are: 3840×2160 (4K Ultra HD): 25p, 1920×1080 (Full HD): 60p, 1280×720 (HD): 120p, HD and Full HD standards are 16:9
Aspect ratio, recording standard definition video (640x480) only supports 4:3 aspect ratio.
From this point of view, the M50 cannot shoot in a 4:3 aspect ratio.
In addition, the 4k resolution video on the Canon m50 is cropped, and the practical value is reduced. For example, when shooting with a 22mm lens, the viewing field of view in the apsc format needs to be multiplied by an equivalent factor of 1.6. When shooting with the m50
For 4k videos, it needs to be multiplied by a factor of 1.5. As a result, the viewing angle is severely cropped and the practical value is greatly reduced.
Shooting at 1080 resolution has no impact.
Moreover, you cannot use full-pixel dual-core focus when shooting 4k. The autofocus basically returns to the speed of ordinary contrast focus. In this way, 4k video is basically equivalent to a display.