Have a question about today's best lenses? Here are all the answers you need.
Since Pop Photo began its improved lens-testing program in 1988, we have done full Lab tests on 444 interchangeable optics for SLR and rangefinder cameras, both film and digital. What we've learned could fill a book -- but we'll spare you, and instead answer 10 of the most common questions photo enthusiasts ask.
1) What's better, an image-stabilized lens or a fast (bright) lens?
An IS lens counteracts only your motion, but a fast lens can counteract both your movement and your subject's by transmitting more light, letting you use a faster shutter speed to freeze motion and reduce blur when handholding. IS, no matter how effective, won't sharpen a running tyke photographed at 1/15 sec.
If you shoot a lot of action, you'll want a fast lens. If you take a lot of handheld, low-light candids of stationary subjects, you'll want stabilization. Best of all, of course, is a fast lens and stabilization (in-lens or in-camera). Tests of lenses such as Canon's 17-55mm f/2.8 EF-S IS USM ($1,000, street) prove the point.
Dan Richards
more : popphoto
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