Sigma APO 100-300mm f4 EX IF HSM Telephoto Zoom Lens
The ideal telephoto zoom lens for Digital SLR cameras
This telephoto zoom lens provides a large F4 aperture at all focal lengths. With minimal light-fall-off, superior peripheral brightness is ensured. It’s the ideal lens for digital SLR cameras.
HSM (Hyper Sonic Motor) ensures a quiet, high-speed AF The AF drive for Sigma SA, Canon and Nikon cameras is equipped with a silent, responsive and high speed HSM (Hyper Sonic Motor), which also provides full-time manual focus function.
Inner focusing and inner zooming systems This lens incorporates an internal focusing system, which eliminates front lens rotation, allowing the use of a Petal-typeHood and more convenient to use of circular polarizing filter. Since focusing and zooming do not change its overall length, this lens is easy to hold and use.
The use of an Apochromatic design and 4 SLD (The Special Low Dispersion) glass elements (two SLD glass elements are utilized in the front lens group and two in the rear group) provide for full correction of chromatic aberration and a high level of optical performance.
APO Tele-Converter EX (optional)
High-speed focusing is possible when this lens is used with dedicated APO EX tele-converters (1.4x and 2x). With the optional APO tele-converter 1.4x EX, it works as AF zoom lens from 140mm to 420mm F5.6. With APO tele-converter 2.0x EX, it works as a manual focus zoom lens from 200mm to 600mm F8. It is possible to use AE (Automatic Exposure) function, even EX Tele-converters are attached to the lens.
- Lens Construction 16 Elements in 14 Groups
- Angle of View 24.4 - 8.2 degrees
- Number of Diaphragm Blades 9 Blades
- Minimum Aperture F32
- Minimum Focusing Distance 180cm
- Maximum Magnification 1:5
- Filter Size 82mm
- Dimensions Diameter 92.4mm X Length 227mm
- Weight 1440g