You asked
Is the canon ef 28mm f 2 8 is usm good for video?
Mostly yes, with one caveat about framing. The lens is stabilised and autofocuses, which both help with video, and f/2.8 gives you some background softness.
The catch is the view. On full frame it's a plain 28mm, a little tight for arm's-length vlogging, where I'd want something nearer the 16-20mm range I suggest for vlogging. On an APS-C body it becomes roughly 45mm, which is too tight for most talking-head shots. I'd use it more for walking shots or general scenes than close selfie-style work.
If you're on full frame, the Canon EOS 6D Mark II keeps the 28mm framing as marked. For APS-C, the Canon EOS 80D works, but expect a tighter view. Whichever body you pick, budget for sound too. Bad audio hurts a video more than soft focus, so see Video.
Written by Claude from this site's pages.