The Sigma 105mm f2.8 EX Macro delivers superb, distortion-free images throughout its broad focus range, from infinity telephoto to 1: 1 (life-size) macro, as close as 12.3 without accessories.Its non-rotating front lens group makes it easier to work with polarizing filters and has a focus limiter (eg. Full Range; - 15.8 in.; 14.6 in. - 12.3 in.).A focus-free mechanical design allows the lens to auto focus without any interference from the manual focus ring. This makes it easier to hold the lens without affecting the speed or normal operation of the autofocus function. Rugged mechanical construction also makes it durable enough for even the heaviest use required by professional photographers.The Sigma 105mm f2.8 EX Macro features the new deluxe external EX finish. These features and other Sigma optical advances, including an uncommonly broad range of focus, make this an ideal lens for a wide variety of applications, from nature photography to portraits.A handy screw-in type metal sunshade makes it easier to rotate a polarizing filter. more info

This compact telephoto zoom lens was exclusively designed for use with digital SLR cameras. The image circle was designed to match the size of the image sensors of digital SLR cameras that also allows compact body and lightweight. Characteristics of digital cameras were taken into consideration when designing the lens power layout, making high-quality images reality through the entire zoom range.The image circle was designed to match the size of the image sensors of digital SLR cameras that also allows compact body and lightweight a maximum diameter of 71.5 mm (2.8in.), and overall length of 87.1mm (3.4in.), and weight of only 310g/10.9 ounces. It has a filter size of 55mm.This lens has a minimum focusing distance of 110cm (43.3in.) and maximum magnification of 1: 4.5.High performance 3.6x telephoto zoom lens suited a wide range of shooting conditions, such as portrait, sports, nature. The focus and zoom rings provide easy operation in manual mode. A distance scale on the focus ring is an easy to use and convenient addition. more info

DT 75-300mm f/4.5-5.6 telephoto zoom lens with 35mm equivalent of 112.5-450mm * compatible with Sony Alpha digital SLR cameras * minimum focus distance: 4.9 feet * minimum aperture: f32 (at 75mm)/f38 (at 300mm) * lens construction: 13 elements in 10 groups * attachment/filter diameter: 55mm * more info