Top critical review
Very much NOT "smooth near-silent STM focusing". Too LOUD for video.
23 January 2017
I've used Canon equipment for many years and have never had anything negative to say until now.
I already have a 50mm lens and even though this STM lens has the same optics I bought it to use as a video lens believing the claim of "smooth near-silent STM focusing".
Smooth maybe but near-silent DEFINATELY NOT!
I have 3 STM zoom lenses that really are near-silent so expected this to be the same.
I had a 2nd one sent because I thought the 1st must be faulty but no, that's how they sound.
So, 5 stars for the optics - if you're just using it for stills it's an excellent lens.
Minimum 1 star for the very audible focusing.
Needless to say I am returning the lens though Amazon's 1st class customer service.