75-300mm telephoto zoom lens with f/4-5.6 maximum aperture for Canon SLR cameras; Improved mechanism makes zooming smoother; front part of zoom ring sports silver ring; Measures 2.8 inches in diameter and 4.8 inches long; weighs 16.8 ounces; 1-year warranty; 4.9-foot closest focusing distance; 32- to 8-degree diagonal angle of view;

50mm standard lens with f/1.4 maximum aperture for Canon SLR cameras; 2 high-refraction lens elements and Gaussian optics help eliminate astigmatism; Delivers crisp images with little flare at the maximum aperture; Extra-small Micro USM focus adjustment and full-time manual focusing; Measures 2.9 inches in diameter and 2 inches long; 1-year warranty;

Canon EOS mount; telephoto zoom lens; 4.5x magnification; 55 to 200 mm focal length; f/4 maximum aperture; 43.3-inch minimum focusing distance;

Special Low Dispersion glass, plus a seven group zoom system and multi-coated optics, enable this wide-ranging zoom lens to provide a high level of performance, as well as versatility; Zoom Lock mechanism helps eliminate zoom creep when the lens is tilted up or down; Detachable lens hood is provided to protect the front of the lens from extraneous light; Accepts 86mm size filters;

f1.2 maximum aperture; Ring-type UltraSonic motor (USM); EF mount; medium telephoto lens; High-speed AF and circular aperture create shallow depth-of-field; 111mm focal length for APS-H sensors, 136mm for APS-C sensors;

EF mount; telephoto zoom lens; Inner focusing; full-time manual focus; 100-300mm focal length; f/4.5-5.6 maximum aperture; Ring-type UltraSonic Motor (USM);

75-300mm telephoto zoom lens with f/4.5-5.6 maximum aperture for Alpha digital SLR cameras; Ideal for taking close-up portraits and sports action without making subject nervous; Gives light sources a pleasing circular defocused effect in the background for better results; Minimum focusing distance of 4 feet, 11 inches; 7 aperture blades; 55mm filter diameter; Measures 2.81 inches in diameter and 4.81 inches long; weighs 1 pound, 2 ounces;

Incorporating Sigma's original OS (Optical Stabilizer) function; An ultra-telephoto zoom lens covers a telephoto range up to 500mm and allows short perspective; Three SLD glass elements and a rear focus system provide optimum image quality throughout the entire zoom range; Super multi-layer coating reduces flare and ghosting; HSM ensures quiet and high-speed autofocus;

50-135mm telephoto zoom lens with F/2.8 maximum aperture for Pentax digital SLR cameras; Aspherical elements, special optical-glass elements, and original glass coatings; Tightly sealed weather- and dust-resistant housing stands up to rainy or dusty conditions; SDM system produces smooth, quiet autofocusing; SP coating protects exposed lens elements; Measures 3 inches in diameter and 5.4 inches long; weighs 24.2 ounces without hood;

EF mount; telephoto zoom lens; Ultra-low Dispersion glass; inner focusing; full-time manual focus; 70-200mm focal length; f2.8 constant maximum aperture; UltraSonic Motor (USM);

Telephoto extender designed to double Canon EF lens focal length; Ideal for shooting close-ups from a distance at sporting events; Weather-resistant and anti-reflective internal construction; Maintains autofocus with any EOD body with f/2.8 or faster aperture; Measures 2.8 inches in diameter and 2.3 inches long; weighs 9.3 ounces;

85mm standard lens with f/1.8 maximum aperture for Canon SLR cameras; Ring-type ultra-sonic monitor (USM) brings subject quickly into focus; Natural angle of view and perspective is ideal for portraits and natural images; Designed to produce beautiful background blur; weighs 15 ounces; Measures 3 inches in diameter and 2.8 inches long; 1-year warranty;

75-300mm telephoto zoom lens with f/4.5-5.6 maximum aperture for Canon SLR cameras; Micro ultra-sonic monitor (USM) makes autofocusing quicker and quieter than before; Improved zoom mechanism with silver on the front; 4.9-foot close focus distance; Ideal for shooting sports, portraits, and wildlife; lightweight frame weighs 16.8 ounces; Measures 2.8 inches in diameter and 4.8 inches long; 1-year warranty;

100-400mm telephoto zoom lens with f/4.5 maximum aperture for Canon SLR cameras; 2 Image Stabilizer modes make it easy to capture far-off action or close-in portraits; Flourite and Super UD-glass elements largely eliminate secondary spectrum; Compatibility with extenders 1.4x II and 2x II; 5.9-foot close focusing distance; Measures 3.6 inches in diameter and 7.4 inches long; 1-year warranty;

70-200mm telephoto zoom lens with f/4 maximum aperture for Canon SLR cameras; Inner focusing system and ring-type ultra-sonic monitor for quick and quiet autofocusing; Compatible with same tripod collar (sold separately) as EF 300mm f/4L USM lens; 3.9-foot close-focusing distance; supports use of circular polarizing filter; Measures 3 inches in diameter and 6.8 inches long; weighs 25 ounces; 1-year warranty;

EF mount; telephoto zoom lens; Ultra-low Dispersion glass; image stabilizer; inner focusing; full-time manual focus; circular aperture; 70-200mm focal length; f/2.8 constant maximum aperture; Micro UltraSonic Motor (USM) Includes case and lens hood;

EF mount; telephoto lens; Internal focusing; full-time manual focus; 100mm focal length; f/2 maximum aperture; Micro UltraSonic Motor (USM);

A700, DSLR-A700, A100, A100K, DSLR-A100,; DSLR-A100K, Sony, Alpha, Minolta;

Nikon G-type mount; telephoto zoom lens; 4.5x magnification; 55 to 200 mm focal length; f/4 maximum aperture; 43.3-inch minimum focusing distance;

500mm super telephoto lens with f/8 maximum aperture for Sony Alpha digital SLR camera; World's only super telephoto reflex lens with autofocus capability for quick shot reactions; Reflective optics eliminates the chromatic aberration to produce sharp, clear images; Shutter speed exposure control; hold button locks autofocus for full creative control; Measures 3.62 inches in diameter and 4.75 inches long; weighs 1 pound, 7 ounces;