The Sigma 70-300mm f4-5.6 DG Macro Lens for Canon Digital SLR Cameras is a telephoto lens that offers excellent cost performance and is optimized for use with digital SLR cameras. Capable of macro photography, this lens has a 1:2 maximum close-up magnification at the 300 millimeter focal length. It's the ideal high performance lens for portraits, sports photography, nature photography, and other types of photography that frequently use the telephoto range. The lens features a switch for changeover to macro photography at focal lengths between 200 millimeters and 300 millimeters, with a maximum close-up magnification from 1:2.9 to 1:2.
The multi-layer lens coating and lens design reduce flare and ghosting, which is a common problem with digital cameras, and it also creates an optimum color balance through the entire zoom range. The minimum focusing distance is 59 inches at all zoom settings. The lens features a switch for changeover to macro photography at focal lengths between 200 millimeters and 300 millimeters with a maximum close-up magnification. Without changing the distance between camera and subject, you can change the shooting magnification.
<P>Sigma's 70-300mm F4-5.6 DG Macro is a compact telephoto zoom lens. With a range that is useful for candid portraiture, capturing children playing in the backyard, amateur sports or even wildlife at the zoo this lens is usually the lens that photographers reach for first. It's great on vacation for capturing scenic details or even groups of flowers in a garden. The Sigma 70-300mm offer a 4 to 1 zoom ratio in a compact lens that is easily carried in your camera bag or left on the camera as you travel; and the images are magnificent.</P> <P>Designed for use with full frame digital SLR cameras. </P> <P>May also be used with smaller APS-c size sensors with a corresponding effective increase in focal length to about 100 to 450mm with most cameras</P> <P>Minimum focusing distance of 59 inches throughout the entire zoom range & a maximum magnification ratio of 1:2. </P> <P>Equipped with a switch that reduces the minimum focusing distance at 150mm to 95cm</P> <P>SLD (Special Low Dispersion) glass elements provide optimum color correction & sharpness throughout the entire zoom range</P> <P>A lens hood and front & rear lens caps are included with the lens.</P> <P>Specifications</P> <P>Lens Construction 14 Elements in 10 Groups<BR>Angle of View 34.3º-8.2º<BR>Number of Diaphragm Blades 9<BR>Mininum Aperture f22-32<BR>Minimum Focusing Distance 150*(95) cm / 59.1*(37.4) in<BR>Filter Size (mm) 58<BR>Maximum Magnifications 1:4<BR>Dimensions<BR>(Diameter x Length) 76.6 x 119.5 mm/3.0 x 4.7 in<BR>Extended Dimensions 208.30 mm / 8.2 in<BR>Weight 530g / 18.7oz.</P>