Guide Number of 61 @ 200' (60 m) Auto Zoom Coverage for 24-105mm TTL Operation With Pentax DSLRs Bounce, Tilt, and Swivel Head Manual Setting Available Takes 4x AA Batteries

The Sigma 50-200mm f/ 4- 5.6 DC OS HSM is a compact, high-performance telephoto zoom lens. It utilizes Sigma's own Optical Stabilizer function to elimiate the effects of camera shake so subjets can be easily and clearly seen in the cameras viewfinder in addition to the image. It allows the use of shutter speeds up to 4 stops slower than normal for steady, handheld photography. For Pentax cameras the built-in OS System allows the photographer to see the stabilized image in the viewfinder and can be used as an alternative with cameras having built-in image stabilization.

The SMC Pentax DA 50-200mm f/4-5.6 ED WR Lens is a medium-range 4X telephoto zoom, designed for exclusive use with PENTAX KAF-mount digital SLR cameras. This DA 50-200mm zoom features a responsive "Quick-Shift Focus System" that allows photographers to instantly switch the focus mode from auto to manual with a slight twist of the focus ring.

The Tamron AF 70-300mm f/4-5.6 Di LD Macro lens is a quality compact ultra tele zoom lens which covers the 70mm to 300mm telephoto range, with a maximum magnification ratio of 1:2 at the tele end.

Sigma's 70-300mm f4-5.6 APO DG Macro is one of several tele-macro zoom lenses. It is a compact Apochromatic tele-macro zoom lens incorporating two Special Low Dispersion glass elements in the front lens group, plus one Special Low Dispersion glass element in the rear lens group, to minimize chromatic aberration.

Pentax AF Mount Color Corrected Lens Elements Designed for Use with Digital Cameras

Guide Number 200' (61 m) @ISO100 Modeling Flash and Wireless TTL Features Autozoom Function Compatible with Pentax AF DSLRs Carrying Case and Flash Stand Included

The Tamron AF18-200mm F/3.5-6.3 XR Di-II LD Aspherical (IF) MACRO is a high power zoom lens designed exclusively for digital SLR cameras using the more compact (APS-C) digital size image sensors. The focal length of this lens is equivalent to approx. 28-300mm in 35mm format.

The Sigma 1.4x DG EX APO Tele Converter (also known as a tele-extender) will multiply the focal length of the existing lens by 1.4x, and will cut back the amount of light by one f/stop. For example, using a 1.4x teleconverter with a 300 mm lens will effectively increase the focal length to 420mm. A lens set to f/2.8 will now be f/4.

The versatile DA 55-300mm ED zoom lens offers an extreme telephoto zoom range, perfect for those moderate to long shots. ED elements compensate for chromatic aberration, while the Pentax SP coating which protects the exposed lens elements. Developed specifically for Pentax digital SLRs, the DA 55-300mm ED zoom has a focal length equivalent to 82.5mm to 450mm in the 35mm format.

The Sigma 70-300mm 4-5.6 DG Macro lens is the compact and economical choice for a telephoto zoom lens. Capable of macro photography, this lens has a 1:2 maximum close-up magnification at the 300 mm focal length. It is the ideal high performance lens for portraits, sports photography, nature photography, and other types of photography that frequently use the telephoto range.

The Sigma 2x EX APO Tele Converter (also known as a tele-extender) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6.

Sigma's 70-300mm f4-5.6 APO DG Macro is one of several tele-macro zoom lenses. It is a compact Apochromatic tele-macro zoom lens incorporating two Special Low Dispersion glass elements in the front lens group, plus one Special Low Dispersion glass element in the rear lens group, to minimize chromatic aberration.

This compact high zoom ratio lens incorporates Sigma's original OS (Optical Stabilizer) function. This system uses two sensors inside the lens to detect vertical andhorizontal movement of the camera and works by moving an optical image stabilizing lens group to effectively compensate for camera shake. It offers the use of shutter speeds approximately 4 stops slower.

The Sigma 18-50mm f/2.8-4.5 DC OS HSM is a lens dedicated to digital SLR cameras with APS-C size image sensors offering a large aperture and Sigma's Optical Stabilization and provides a high level of optical performance. The combination of the large aperture of f/2.8 and anti-shake function makes capturing exceptional photos in low light achievable, and the wide angle is well suited for indoor photography.

The Sigma 70-300mm f/4-5.6 DG OS Telephoto Zoom makes telephoto shooting easy for many types of photography such as sport and nature. The lens is built with Special Low Dispersion Glass (SLD) elements to provide corrections for all types of aberrations. Its super-multi-layer coating adds to the excellence of images by reducing flare and ghosting, yielding high contrast images throughout the focal range.

The Tamron SP AF 17-50mm f/2.8 XR Di-II LD Aspherical [IF] is a lightweight, compact, and fast standard zoom lens designed exclusively for digital SLR cameras. The focal length of this lens is equivalent to approx. 26-75mm in 35mm format.

Guide No. 46'/14 m

The 90mm f/2.8 macro lens boasts high resolving power and sharp image depiction with ideal background blur, making it the ideal lens for close-up and portrait photography. With emphasis on portability, this macro lens is compact and lightweight. A wide, smooth focusing ring makes delicate manual focusing in the macro mode easy and precise.

An extended range Zoom Lens with Hybrid Optical Stabilization and Hyper-Sonic Motor, Sigmas innovation is in the 18-250mm F3.5-6.3 DC OS HSM 13.8:1 extended range zoom lens. The Hybrid Optical Stabilizer, an anti-shake system providing image stabilization in both the camera body and viewfinder for Pentax, and Sony is offered only by Sigma.