I keep this filter on my main 18-55mm lens on my Sony NEX-5R. I have never had any issues with it. I've taken out in the snow, rain, and dirt/dust. It has never scratched and has been great for protecting my camera and enhancing my photos. I have a pack of these threaded filters and can only stack two before the vignetting gets too severe.This is definitely essential camera gear to have!

So many people recommended the F2.8 16-35. Gladly I didn't listen and instead bought this lens for the value. Satisfies my needs for UWA, which I use for car shooting, landscaping,architecture. Excellent built quality. For the price, it is a keeper.

This lens is really sharp and feels really solid. Weather sealing is a nice touch too. I would have gotten the 16-35 f2.8 if i could afford it, but i don't regret getting this one a bit. Besides, if you want a lens for landscapes, you won't need something at f2.8 anyway. Save the money and get a fast prime for low light stuff.

Amazing for the price ! Packaging is decent ! I used this for a Sony 28mm f2.8

Fits nicely into my Sony 55mm lens. Love the variable filter and the photo quality is very good.

Made well. Comfortable. Secure. I used it extensively with my Fujifilm X-H1 and 16-55mm in several national parks. Would buy again.

It tried this lens after my 16-35/f2.8 was stolen. It's a great value compared to Canon's other L series lenses. If you don't need the extra speed of the 2.8 lens, I highly recommend it. The only possible con I could come up with is that it is very light compared to the 16-35, which could imply something about its durability, but that's pure conjecture, and I can't subtract a star for that. It could simply be that the 16-35 contains more glass to accomplish the 2.8 aperture.

Does what it needs to do, it can also hold my Sony A7ii with a 24-70mm f2.8 GM lens. I am quite impressed it can hold the weight and still function as well as it can. Only wish is that if it could have a bit more adjustment flexibility with the angle of the legs, there are only 2 settings. All in all, still a great product and seems pretty sturdy when i went hiking and as well for night shots of the stars.