Canon EF 17 40mm f 4L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras

Canon EF 17 40mm f 4L USM Ultra Wide Angle Zoom Lens for Canon SLR Cameras

The EF17-40mm f/4L USM is an ultra wide angle Canon EF zoom lens meant for professional and high amateur SLR EOS camera users.While it is an excellent lens when used with an analog SLR camera, the EF17-40mm f/4L USM is especially well suited for digital SLR cameras with an imaging sensor size smaller than the 35mm format. Indeed on such digital SLR cameras these focal lengths can give an angle of view approximately equivalent to that of a 28-70mm lens used on a 35mm camera, which makes it the ideal standard zoom lens.The EF17-40mm f/4L USM has 12 lens elements arranged in 9 groups. Super Spectra Coating on the elements ensures excellent color balance and minimizes ghosting and flare. To provide superb image quality over a 17-40mm zoom range the lens uses three aspheric elements of two different types, while Super UD (Ultra-low Dispersion) glass is used to prevent the chromatic aberrations that often can degrade the subject edge clarity.Minimum focusing distance is just 28mm throughout the entire zoom range. The Auto-focus works silently and quickly thanks to a fast central processing unit with an improved AF algorithm. You can override AF mode with manual focus should you wish. Controlled by an electromagnetic diaphragm, the EF17-40mm f/4L USM’s circular aperture can achieve a more attractive appearance to out of focus background areas in a picture. The front of the lens does not rotate as you focus. This means, for example, that polarizing filters still function effectively as you zoom in and out. At the rear of the lens there’s a drop-in gelatin filter holder. Highly resistant to moisture and dust, the EF17-40mm f/4L USM is ideally suited for use in harsh environments. Environment friendly lead-free glass is used throughout its construction.

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Nikon D90 Digital SLR Camera: The First Review

Think Camera has the first review up of the new Nikon D90 up that I’ve seen, and if you were wondering how well the D-movie mode works, or how it stacks up against fellow stable-mate, the D300, well Think Camera has your answers. Much like the D300, the Nikon D90 has superb image quality – ISO200-800 provide excellent low noise images, with an essence of moiré around the ISO1600-3200 mark. ISO6400 takes a notable jump in image noise; best left for rare occasions. This newly developed senso

Nikon D90 Digital SLR Camera: The First Review

Nikon D90 Digital SLR Camera: The First Review Posted on September 8th, 2008 by Technorati Search for: digital camera reviews Think Camera has the first review up of the new Nikon D90 up that I’ve seen, and if you were wondering how well the D-movie mode works, or how it stacks up against fellow stable-mate, the D300, well Think Camera has your answers. Much like the D300, the Nikon D90 has superb image quality – ISO200-800 provide excellent low noise images, with an essence of moiré around t

Canon EF 70 200mm f 2 8L USM Telephoto Zoom Lens for Canon SLR Cameras

Canon EF 70 200mm f 2 8L USM Telephoto Zoom Lens for Canon SLR Cameras

This CANON EF 70-200mm f/2.8L USM Telephoto Zoom Lens is one of the finest telephoto zoom lenses in the EF line, comparable in optic quality to a single focal length lens. It has four UD-glass elements to correct chromatic aberrations. Its constant f/2.8 maximum aperture and superb image quality make it one of the most popular professional SLR lenses in the world. Where image quality and detail matter most and you prefer using a rotating zoom, this lens offers outstanding value. Maximum Diameter x Length, Weight – 3.3 x 7.6, 2.9 lbs. / 84.6mm x 193.6mm, 1310g Compatible with Extender EF 1.4x II and 2x II.

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Pentax K20D 14 6MP Digital SLR Camera with Shake Reduction Body Only

Pentax K20D 14 6MP Digital SLR Camera with Shake Reduction Body Only

The PENTAX K20D digital SLR offers advanced photo enthusiasts an array of exciting PENTAX innovations. The newly developed CMOS image sensor brings out optimum performance of PENTAX interchangeable lenses. Featuring 14.6 effective megapixels (highest in its class) and the latest noise-reduction technology, the sensor assures superb image quality. This SLR will make you feel in control with its Live View function that allows the photographer to see the image on the camera’s back panel LCD monitor while shooting. Customizable features ideal for shooters who demand complete control include the Expanded Dynamic Range function that allows users to gain more contrast/detail in bright settings and a new Custom Image function to select/adjust finishing touches to an image. Weather and dust resistant body allows you to keep shooting even in harsh conditions; Dust Reduction and Dust Alert features eliminate the need of time retouching Advanced 16-segment metering and 11-point AF, with 9 cross sensors, ensure perfectly exposed and focused images Unique exposure modes, such as hyper-program, Sv and TAv, offer shooting versatility Retractable P-TTL popup ElectronicFlash; Guide number – 13 (100/m); Coverage – 28mm wide angle (equivalent to 35mm) Flash modes – on, redeye, slow sync, slow sync + redeye, trailing curtain sync, wireless; Flash exposure compensation – -2 to +1 EV in 1/2 steps / Hot Shoe for adding optional external-flash USB 2.0 hi-speed, video out, DC input, cable switch, X-Sync socket; Video out – NTSC, PAL; Printer interfaces – PictBridge Body dimensions (W x H x D) – 5.6 x 4.0 x 2.76?; Body weight (without battery or removable memory) – 25.2 oz; Loaded and ready – 28.2 oz Uses and includes Rechargeable Li-Ion Battery D-LI50 (39581) with Charger

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