Sigma's 24mm F1.8 EX DG Aspherical Macro Lens is a large Aperture wide angle lens giving photographers freedom of expression with the ability to set the desired aperture and get as close as 7.1 inches allowing the photographer the juxtaposition between near and backgrounds in the distance. The 84 angle of view is perfect for landscape photos while also great for shooting group shots without distorting the subjects at the edge of the frame and compact enough for working in tight quarter with a single subject. This lens is perfect for photo journalists where it is essential to have a fast, wide angle lens, scenic, social and full-time Professional photographers who are in need of a hardworking lens. Extremely compact within the category of super fast wide-angle lenses and totally affordable... Less

Lens Hood, Front & Rear Lens Caps, Pouch Case, 1 Year International Warranty plus 3 Year Sigma U.S.A. Extended Warranty (Total Warranty is 4 Years from Date of Purchase).Sigma 24mm f1.8 EX DG Aspherical Macro is one of the EX Series lenses. This lens has a fast F1.8 maximum aperture with macro focusing capability of minimum focusing down to 18cm/7.1inches (reproduction ratio 1:2.7). The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus image. It incorporates the floating focus system and uses two aspherical lens elements for minimizing distortion and spherical aberration and astigmatism. Internal focus system eliminates front lens rotation, thus allowing the use of a Perfect Hood and the easy use of polarizing filters. The lens incorporates non-vignetting optical... Less

The Sigma Corporation is pleased to announce the new Sigma 12-24mm F4.5-5.6 II DG HSM. One SLD and four FLD glass elements compensate for color aberration and provide high image quality.Three glass mold elements and one hybrid aspherical lens give advanced performance and compact and lightweight construction. The Super Multi-Layer Coating reduces flare and ghosting. This lens has superior peripheral brightness and provides sharp and high contrast images even at the maximum apertures. Incorporation of HSM (Hyper Sonic Motor) ensures quiet and high speed auto focus, while allowing full-time manual focus override. This lens has a minimum focusing distance of 28cm (11.0?) throughout the entire zoom range and a maximum magnification ratio of 1:6.4. In addition, this lens features splash proof... Less

Features: Designed for use with full frame digital cameras. May also be used with smaller APS-c size sensors with a corresponding effective increase in focal length to about 17-35mm with most cameras A splash-proof design allows for use in harsh conditions. One SLD and Four FLD glass Minimum focusing distance of 11 inches Technical Details: Brand Name: Sigma Model: 12-24mm Nikon Lens Type: zoom Minimum focal length: 12 millimeters Maximum focal length: 24 millimeters Weight: 668.0 grams

Cantilever legs ease the strain in crowded classrooms. Open-sided design provide unobstructed dual-entry for students. Spacious 24''W x 18''D work surface. .625'' thick high pressure laminate top. Fusion Maple, Medium Oak and Walnut Top have clear lacquer edge treatment. Grey Nebula Top has black lacquer edge treatment. Nylon floor glides help protect floors, front glides are adjustable. Recommended for Grades 2 - Adult Learning. Recommendations are for students of average height and weight. Greenguard Certified for Children & Schools. 10 Year Manufacturer Limited Warranty. This Item MUST Be Ordered In Increments of 2. Optional Backpack Hanger: hangs on side of table to clear floor of clutter, chrome finish. Optional Bookrack: chrome steel wire basket for convenient book retrieval.