High-performance Carl Zeiss large-aperture zoom. The SAL-2470Z Carl Zeiss Vario-Sonnar f2.8 24-70mm Zoom Lens is a brilliant all-around performer -- with SSM (Super Sonic wave Motor) design for fast, silent auto-focus, pro-quality Carl Zeiss T coated optics to reduce lens flare, and 17-element design with two aspherical and two ED glass lens elements to minimize distortion and virtually eliminate chromatic aberration. It benefits from the Super SteadyShot(R) image stabilization built into every Sony a system DSLR -- and its wide-angle to medium telephoto range in compact, lightweight design is ideal for a wide range of shooting applications (35mm equivalent: 36-105mm). Distance Scale - Yes Distance Encoder - Yes Aperture (Max.) - f/2.8 Aperture (Min.) - f/22 - 29 Aspheric Elements - 2 aspheric Lens Type - Standard Zoom Approximate Unit Dimensions - 3.25 x 4.37 Approximate Unit Weight - 16 ounce

View Sony 24 -70mm f/2.8 Carl Zeiss Vario Sonnar T Zoom Lens for Sony Alpha Digital SLR Cameras details

The SP AF70-200mm F/2.8 zoom lens features a versatile MFD of just 37.4" over the entire zoom range, best-in-class maximum macro magnification ratio of 1:3.1 at f=200mm, and an advantageous internal focusing (IF) system that allow stress-free photography. The new tele-zoom lens covers a desirable focal length range of 70mm medium telephoto to 200mm telephoto when mounted on full-size format SLR cameras and a focal length range from 109mm to 310mm ultra telephoto when mounted on a DSLR camera with an APS-C sized imager. Diameter 3.5 x Length 7.6 (89.5x194.3mm) Weight - 40.6 ounces (1150 grams) without tripod mount

View Tamron AF 70-200mm f/2.8 Di LD IF Macro Lens for Canon Digital SLR Cameras details

Compact L-series telephoto lens with an Image Stabilizer, which compensates for camera shake with the equivalent effect of a shutter speed two stops faster. Two Image Stabilizer modes are provided: Stabilizer Mode 1 (the same mode featured on the EF 75-300mm f/4-5.6 IS USM) and the new Stabilizer Mode 2, which steadies the image during horizontal or vertical panning. Mode 2 detects the panning direction automatically. The closest focusing distance is 4.9 feet (1.5 m).

View Canon EF 300mm f/4L IS USM Telephoto Lens for Canon SLR Cameras details

This high zoom ratio lens is exclusively designed for Canon digital SLR cameras and capable of covering a wide range of focal lengths from wide-angle to telephoto. Two Special Low Dispersion (SLD) glass elements and two hybrid aspherical lenses offer the utmost correction for all types of aberrations, and enables this extended range super zoom lens to be housed in a compact and lightweight construction of 70mm (2.8") diameter, and 78.1mm (3.1") in length, and weighing just 405g/14.3oz. The new lens coating reduces flare and ghost, which is a common problem of digital cameras and also creates an optimum color balance.

This lens has a minimum focusing distance of 45cm (17.7") at all focal lengths and has maximum magnification of 1:4.4. The lens design incorporates an inner focusing system, which prevents the front of the lens from rotating, making it particularly suitable for using circular polarizing filters and petal shaped lens hoods. The overall length of the lens does not change during focusing, ensuring convenient handling and ease of use. A zoom lock switch eliminates 'zoom creep' during transportation, a convenient addition when traveling Minimum focusing distance of 45cm (17.7) at all focal lengths Dimensions - D - 2.8 x L - 3.1 Weight - 14.3oz

View Sigma 18-200mm f/3.5-6.3 DC Lens for Canon Digital SLR Cameras details

Wide-Angle Zoom Lens from UltraWide to Wide Angle / F2.8 Maximum Aperture

View Nikon 17-35mm f/2.8D ED-IF AF-S Zoom Nikkor Lens for Nikon Digital SLR Cameras details

EOS users looking for an all-purpose lens would do well to select the Canon EF 28-200 f/3.5-5.6 USM. The minimum aperture setting is f/22 at a focal length of 28mm, and the EF 28-200 has a minimum focus distance of 17.7 inches at any focal length. An inner focus ring allows the EF 28-200 to focus without rotating the outer half of the lens barrel, which is great for photographers who utilize filters. The autofocus uses Canon's micro USM drive for smooth and quiet operation.

View Canon EF 28-200mm f/3.5-5.6 USM Standard Zoom Lens for Canon SLR Cameras details

Maintaining the high performance of the previous model, Tamron's new 28-300mm zoom lens now features our "Di" design, making it the ideal lens for use with both digital and film cameras. The "Di" design is achieved by applying a new optical design to its coated surfaces, and by further enhancing our already stringent quality control system. Whether you shoot film or digital, the lens provides high image quality for both platforms. When used with APS-C size digital SLR cameras, the lens provides an angle of view equivalent to approximately 44-465mm, covering the standard to ultra telephoto range with no sacrifice of quality or aperture range.

View Tamron AF 28-300mm f/3.5-6.3 XR Di LD Aspherical (IF) Macro Ultra Zoom Lens for Canon Digital SLR Cameras details

Sigma introduces the 24-70mm F2.8 IF EX DG HSM. A compact, large aperture, Standard Zoom Lens equipped with HSM. As a member of the EX series of lenses this 3rd generation Sigma lens is designed with the highest level of optical technology and augments its predecessor with the addition of the Hyper-Sonic Motor (HSM) ensuring a quiet, high speed AF as well as full-time manual focusing capability. Housed in compact construction, the Sigma 24-70mm is a large aperture standard zoom lens ideal for all general photography including portraiture and landscapes. Physically, the shortest lens in the category, its overall length is 3.7 inches/94.7mm. With excellent optics, this could be the foremost performing lens in the category with stunning speed, clarity and color. Intricate lens construction includes Super Multi Layer Coating reducing flare and ghosting; the combination of ELD (Extraordinary Low Dispersion) and two SLD (Special Low Dispersion) glass elements and three Aspherical lenses provide excellent correction of all types of aberrations. Superior optical performance is ensured throughout the entire zoom range with the minimum focusing distance being 15in/38cm and maximum magnification ratio being 1:5.3. The rounded 9-blade diaphragm gives a natural look to backgrounds and foregrounds. Mark Amir, Sigma's General Manager, says, "This new 24-70mm lens demonstrates Sigma's commitment to producing lenses that offer the elusive combination of exceptional quality and high value and adds to the already wide range of critical lens selection." Options - Will coexist with 24-70mm EX DG Macro Includes - Case, Petal-type Hood Number of Diaphragm Blades - 9 Blades Minimum Aperture - F22 Filter Size - 82mm Lens Hood - Petal-type hood Dimensions - Diameter 88.6mm X Length 94.7mm / 3.5 in. x 3.7 in. Weight - 27.9 oz. / 790g

View Sigma 24-70mm f/2.8 IF EX DG HSM AF Standard Zoom Lens for Canon Digital SLR Cameras details

The multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range.

View Sigma APO Teleconverter 2x EX DG for Nikon Mount Lenses details

This lens is highly coveted by anyone that has ever shot with it. The 9-bladed aperture creates beautiful bokeh (the out of focus areas) and the sharpness, color and contrast are amazing. Primarily designed as a portrait lens, it really shines at f/2 to f/5.6 with an amazing 3-D like quality that has to be seen to be believed. The fit and finish are first class, with a nice feel and balance to it. It uses 77mm filters like most other Nikon pro glass and flares quite easily so be sure to use the included metal lens hood.

View Nikon 85mm f/1.4D AF Nikkor Lens for Nikon Digital SLR Cameras details