Further readings for the Pentax smc PENTAX DA 50-200mm F4-5.6 ED
To provide photographers with a broader perspective about mobiles, lenses and cameras, here are links to articles, reviews, and analyses of photographic equipment produced by DxOMark, renown websites, magazines or blogs.
The PENTAX DA Star 200mm F2.8 ED (IF) SDM is the fastest telephoto lens in Pentax’s high-end product range. For example, on an APS-C like the Pentax K5, its focal length is equivalent to a 300mm on a full-frame camera. With its weather- and dust-resistant construction and fast ultrasonic autofocus, it could prove a great companion for wildlife and sports photographers.