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Get information and user reviews for this lens from Amazon: Canon EF 300mm f/2.8L IS USM Telephoto Lens for Canon SLR Cameras
Optically, the 300mm Æ’/2.8L IS produces extremely sharp images, almost free from chromatic aberration, distortion and corner shading. This is most evident when used on a sub-frame sensor body and larger apertures over smaller. On a full-frame sensor body, the lens is almost as good, though corner shading is a bit more evident at Æ’/2.8 and sharpness, while very impressive, is never ”tack-sharp” across the frame. It’s been said before in other reviews, but is worth saying again – it doesn’t get much better than this. For the focal length achieved, Canon has really worked wonders with this lens, which offers excellent performance not only optically but with all the options available to really optimize the photographer’s shooting performance. …When you’re looking to drop several thousand dollars on a lens, you want to be sure you’re buying the right one. The most we can offer is if you settle on the 300mm Æ’/2.8L IS, your only regret will be that you didn’t buy it sooner. READ FULL REVIEW
Other Canon 300mm f/2.8L IS USM EF Reviews
If you can only afford one fast, high quality telephoto and expect to shoot a variety of subjects, give serious consideration to buying this lens and the EF 1.4x and 2.0x teleconverters. If you are looking for a lens specifically for bird or small mammal photography, the EF 500/4.5 is perhaps more suitable, and weighs about half as much as either the 600/4 or 400/2.8. Compared to the current (mid-1996) prices of these lenses, the 300/2.8 is almost cheap at $4600. READ FULL REVIEW
When one has just spent U.S. $5,000 on a lens it’s hard to be objective. Let me try though. It’s beautifully made, in the current Canon idiom. Everything about its design and construction reeks quality. In fact this lens is probably as fine an optic as Canon knows how to make, and that’s saying a lot. Reportedly Canon spent $11 million developing this line of 4 lenses, and it shows in every respect. READ FULL REVIEW