I was very curious to take a closer look at the super-compact and super-wide Canon RF 16mm f2.8 STM. And now, thanks to the store abc photo I have such an opportunity.
I did tests (photos and videos) and compared this lens with others, namely with Canon EF 16-35mm f2.8L III, Laowa 14mm f4 Zero-D и Pergear 10mm f8 FishEye. All of these lenses have reviews on my YouTube channel.
As for Canon RF 16mm f2.8 STM, then its jamb consists in a huge distortion. If you watch RAW files from this lens, then it looks more like fishyethan wide-angle.
But after the corrections (which the camera makes automatically), you won't even guess about it. The truth is revealed only when raw files are processed in the editor. This is a payment for compactness and relatively low price.
The STM autofocus motor is quiet and fast - no issues with it.
Total
I can recommend this lens to most photographers and videographers, despite the fishery nuance. In practice, he shows himself very well.
(I.e. Cost Canon RF 16mm f2.8 STM
For more details, see my video review: