I purchased this lens specifically for wide angle shots. The image quality and sharpness are what I expected from a Canon L Series lens. If you're looking for a reasonably priced, wide angle Canon L Series lens, you should strongly consider the 17/40 L.

I have used various Canon and other brands of wide angle lenses with varying success, but this is the best EF wide angle lens I have used to date.

great wide angle lense. Best vlogging lense for Canon Mirroless

I needed a wide angle lens for my full frame Canon DSLR. As expected, I found it to be as advertised and I am very satisfied with it. I would recommend it.

EF - Lens adapter perfect for wide angle and other type of lenses cheaper than the viltrox, and better to use since it is from Taiwan and made in japan i rather buy japanese and taiwanese products and support them since their quality is greater than Chinese, i support it since they actually are more detailed on the manufacturer and the way they actually do the diagrams and cuts are precise but i know the quality is even stronger and more durable than chinese cheap brands. Love japanese quality and brands.

fits the 10-22 canon lens well, although the effect needs to be used carefully owing to the wide angle of the lens

After I purchased a wide angle lens for my Canon M50 I realized that I would need an adapter. Everything came down to making a decision between the budget adapter and forking over more money for the canon brand because reviews were constantly complaining about the budget adapter not fitting and potentially screwing up your camera. Luckily I realized that there were lightly used Canon adapters for more than half off so it was a no brainer and I’m glad to report that it has exceeded my expectations in quality and I’m glad I spent the few extra bucks for the Canon adapter. Definitely would recommend.

Love this wide angle lens for the Canon M system. Original Canon lenses have never let me down. Will work with the new Canon EOS M5 to be released in November 2016.