Prior to buying this lens my widest was 16mm which I really liked a lot for my Landscape and Realestate photography and it was getting me plenty of work. But when I read about the 11-24 being Rectilinear I knew I needed this lens.The purchase price was definitely a big stretch but wow, what a lens. This lens made my Realestate shots soooo much easier and better than the 16-35mm I had been using. I was able to get so much more in and didn't have to go pushing and pulling the final image to get lines straight so it also saved me a lot of time.For my Landscapes it simply opened up opportunities to photograph things in a single shot that I had previously had to do Pano's for and some of my favourite close and wide Landscapes have come from this unit.The only ... MorePrior to buying this lens my widest was 16mm which I really liked a lot for my Landscape and Realestate photography and it was getting me plenty of work. But when I read about the 11-24 being Rectilinear I knew I needed this lens.The purchase price was definitely a big stretch but wow, what a lens. This lens made my Realestate shots soooo much easier and better than the 16-35mm I had been using. I was able to get so much more in and didn't have to go pushing and pulling the final image to get lines straight so it also saved me a lot of time.For my Landscapes it simply opened up opportunities to photograph things in a single shot that I had previously had to do Pano's for and some of my favourite close and wide Landscapes have come from this unit.The only downsides are it's bulk, weight and that great big dome shaped lans that won;t take a filter and is out there in harms way so it is not a lens for a careless photographer, you know, the ones that don't use lens caps and just shove their cameras in a bag or out of the way when on the move. The lens cap must be used all the time when not taking photo to keep the scratches and ships away and to keep the dust and water off as much as possible. It is not a lens you want to be cleaning any more than absolutely necessary as that also risks scratching it and polishing off the coatings.Treat it with care and it will keep on impressing you for a very long time.

I gave this lens 5 stars because, first of all, it is the only rectilinear lens of this focal length in the world! Sure, Sigma and Nikon both have 12-24mm zooms; but 11 is 11, and 12 is 12, lol. It's on sale now; and I believe it's going to be discontinued. Be very careful in handling it because the front lens element is not protected; and you cannot place filters over it to avoid damage. I'm still putting this glass to the test. So, I have no pictures to post yet. I am going to Iceland to photograph the ice caves. That's where this chunk of glass will shine! Also, this completes my zoom kit ( EF 11-24mm f/4.0L, EF 24-70mm f/2.8L, and the EF 70-200mm f/2.8L )! With this set-up, I can cover virtually any assignment coming my way! In closing, I'd like to say, if you ... MoreI gave this lens 5 stars because, first of all, it is the only rectilinear lens of this focal length in the world! Sure, Sigma and Nikon both have 12-24mm zooms; but 11 is 11, and 12 is 12, lol. It's on sale now; and I believe it's going to be discontinued. Be very careful in handling it because the front lens element is not protected; and you cannot place filters over it to avoid damage. I'm still putting this glass to the test. So, I have no pictures to post yet. I am going to Iceland to photograph the ice caves. That's where this chunk of glass will shine! Also, this completes my zoom kit ( EF 11-24mm f/4.0L, EF 24-70mm f/2.8L, and the EF 70-200mm f/2.8L )! With this set-up, I can cover virtually any assignment coming my way! In closing, I'd like to say, if you can afford to take a dive, go for it; and add this 'weapon' to your arsenal.

Yes, you read correctly! I am a Nikon shooter, having both Z6 and a Z7 mirrorless cameras. My favorite non Nikon lenses are the Canon 100-400mm super telephoto zoom and this 11-24mm lens. I always wanted to own some Canon glass but being a dyed in the wool Nikon user this was not going to happen, till now.The Fringer EF to Z lens adapter changed everything. My Nikon's fully control this Canon lens plus it adds the optical image stabilization of the camera itself. Sweet! As many other reviewers have written, this is a very special lens, not meant for many photographic situations. That said, when used at its zoomed in range it behaves like a normal wide angle lens and can be used as general purpose glass. But when you need some super-wide coverage, just twist the ... MoreYes, you read correctly! I am a Nikon shooter, having both Z6 and a Z7 mirrorless cameras. My favorite non Nikon lenses are the Canon 100-400mm super telephoto zoom and this 11-24mm lens. I always wanted to own some Canon glass but being a dyed in the wool Nikon user this was not going to happen, till now.The Fringer EF to Z lens adapter changed everything. My Nikon's fully control this Canon lens plus it adds the optical image stabilization of the camera itself. Sweet! As many other reviewers have written, this is a very special lens, not meant for many photographic situations. That said, when used at its zoomed in range it behaves like a normal wide angle lens and can be used as general purpose glass. But when you need some super-wide coverage, just twist the ring and voila. Obviously at 11mm you are going to get serious perspective distortion. But with the right subject it's less noticeable.The first mistake of a newby is not getting close enough to your subject. The second is not being absolutely parallel to it in both horizontal and vertical planes unless you want an exaggerated effect.My previous super-wide zoom lens was a Tokina 11-16mm F/2.8 but designed only for cropped DX imagers resulting in an actual 16.5-24mm range. For my industrial photography or equipment racks with only a couple of feed of room, this was insufficient. Plus the lens didn't produce images worth writing home about.I've only had this lens for a few days, so I have lots of experimentation ahead. I'm documenting the effects on my small town community of the CORVID-19 pandemic and spent a couple of hours with only this lens on the Nikon for practice. My sample images are a mix of the grandeur of nature and the impact of measures to stay safe.