Fast shipping. The filter has been used for a month. I have not seen any problem. Actually it is quite clear and protects my telephoto lens.

This filter performs as expected. I put it on my Nikon D40 telephoto lens to protect it and it does. Price was good and not made in China.

Quick to install. Works great. Great quality.You should really consider making a telephoto lens.

I've been looking to upgrade the UV filter on my telephoto lens and this looked like a great option. The glass is very clear, and it doesn't cause any issues or artifacts with my photos. It is a really nice UV filter for $20 (at the time of this review), and the quality and materials seem really great especially for the price. I would recommend this!

Nice telephoto lens for the money I had been looking for a while couldn’t afford the others like 2500.00 and up this on does just as good and a lot cheaper

This is simply the best telephoto lens I have ever used. It arrived about 3 weeks ago and has performed flawlessly on both my 30D and my film camera (the old EOS 630). The blurred backround at wider aperture settings is satisfying and seamless, while the contrast, color and sharpness of the image are remarkable. There is a very slight, but barely perceptible, softening of the image on film when the lens is wide open at f=2.8, but by f=3.5 I can't detect any lack of sharpness even on enlargements.The IS works perfectly. There is a little motor noise (very soft) while the IS is engaged, but nothing that would disturb a nearby subject. As others have stated, IS is no complete panacea for hand-held shooting in near total darkness, but I have been able to get a lot of great exposures that would have been impossible with any other telephoto.Another huge plus is that this lens allows full time manual focus; you don't have to flip a switch to override the auto focus. All you need to do is start turning the focus ring. This saves a lot of time and missed shots when the autofocus is choosing something other than what you want to shoot.On the other hand this is not a "walk-around" lens. It is very serviceable off the tripod for short sessions, or even hanging around for a couple of hours. If you watch Art Wolfe on "Journeys To The Edge" (highly recommended show on PBS)he uses this lens a lot, and often hand carries it around without using the neck strap. But it does get heavy after a while. And it is a long,fixed length lens. But the weight and length are just the price we have to pay for a lens that retains its maximum 2.8 aperture through its entire range.If you are serious about the images you create, and can afford the price, this lens is an investment you cannot afford to pass up.

Definitely a good lens, probably use it more than telephoto lenses.

Great lens, I needed a telephoto and everyone pointed me towards this one. It is probably my largest single investment so far in photo equipment but so far its worth it.