Here is a Canon RF 16mm F2.8 STM review in video format. This seems to…
Canon EF 70-200mm f/2.8L IS II vs Tamron 70-200mm f/2.8 Di VC Video Review
DigitalRev’s Kai compares the Canon EF 70-200mm f/2.8L II to the Tamron 70-200mm f/2.8 Di VC USD. That’s $2,200 (Canon) vs $1,500 (Tamron). I won’t spoil the video review but let’s say that the Tamron holds up to 95% of the Canon. If you want the best of the best go for the Canon, otherwise the Tamron is an excellent choice.