Sigma 28-300mm f/3.5-6.3 DG Macro Aspherical Lens

This Sigma 28-300mm f/3.5-6.3 DG Macro compact high magnification zoom lens covers focal lengths from 28mm wide angle to 300mm supertelephoto, a 10.7x zoom ratio. It also offers a minimum focusing distance of 1.6' (50 cm) at all focal lengths and is equipped with a macro mechanism for close-up photography at 300mm telephoto, allowing a reproduction ratio of 1:3.

This lens also incorporates two Special Low Dispersion Lens (SLD) elements, and four Aspherical elements, to correct for all types of aberrations. The improved DG lens design corrects for various aberrations. This lens is specially coated to Best Prices for the best color balance while cutting down on ghosting caused by reflections from the digital image sensor.

This versatile, all-purpose zoom lens can capture a wide range of subjects using its wide angle, ultra-telephoto and close-up capabilities.

Note: this lens has no built-in motor and will not autofocus on the Nikon D40/D40x, Nikon D60, Nikon D3000, Nikon D3100 or the Nikon D5000 Cameras.

Superzoom
The phrase superzoom or hyperzoom is often used as a sales pitch for zoom lenses featuring unconventionally long focal length factors, most of the time larger than 4× while ranging as high as 15×, e.g., 35mm-350mm. The longest ratio for DSLR cameras is the Tamron 18–-70 mm lens, providing 15×. A few Digital Cameras have even greater zoom ratios as high as 35×. On behalf of movie and TV use, Panavision is the record holder with a 300X HD Lens. Although in recent years superzoom lenses have greatly improved, they still must go a long way to catch up with shorter-range zoom and prime photographic lenses. Most significant is the greatly increased probability of substantial distortions of an image at either extreme end of the zoom range. Other potential issues include reduced maximum apertures and inferior autofocus performance

Following is a list of superzoom lenses, used for 135 format in SLRs or for APS format in DSLRs. The minimal factor used here is 5× or more. A 28–200 mm has a 75° to 12.3° angle of view, a 28–300 mm (or an 18–200 mm for an APS DSLR) has an 11.1x 75° to 8.2°

• Special Low Dispersion & Aspherical glass elements • Internal focusing non-rotating front • Built-in zoom lock prevents lens creep • Lead and arsenic free ecological glass

Lens Hood, Front & Rear Lens Caps, 1 Year International Warranty plus 2 Year Sigma U.S.A. Extended Warranty (Total Warranty is 3 Years from Date of Purchase)

Great for the Price!, April 17, 2008

By David N. Wood "dddan" (why do you care, county)

This is a great lens! Although the Auto Focus feature does not work with the D40, which I have, I still like it very much. I don't have to switch lenses and the price is great. I was looking into nikon lenses, but the closest they have is 70-300, meaning I would have to change lenses; it was also $600! I think this is the way to go if you are not a professional, and you're just looking for that perfect shot!

By George Ellis Jr. "baby george" (Tougaloo, MS USA)

My Sigma 28-300mm is mounted onto my Nikon D80. The Sigma 28-300mm is a unique lens that allows you to concentrate on the shot rather than cropping. It allows you to zoom-in or out and frame your shot with simplicity, clarity and sharpness that Nikon is known world-wide for their technology.