Sigma 50mm f/2.8 EX DG Macro Lens

Optimized image quality for Digital SLR cameras. Floating Internal Focusing (FIF) system minimizes the aberration in entire focusing range. Super Multi Layer (SML) coating reduces the ghost caused by reflections from the surface of digital image sensors. Minimum aperture of F/32 provides greater depth of field A screw-in hood for convenient use of circular polarizing filters.

DG lenses are designed to work on 35mm film cameras and digital cameras with 'full frame sensors. They can also be used on the cropped sensor cameras because the image circle they cast on the sensor is larger than needed. 

The exterior of this lens is EX-finished to denote the superior build and optical quality, and to enhance its appearance.

The Sigma MACRO 50mm F2.8 EX DG prime lens incorporates the very latest optical technology and is an ideal standard lens for digital SLR cameras. The new advanced lens design corrects various aberrations. This macro lens is specially coated to Best Prices for the best color balance while cutting down ghost caused by reflections from the digital image sensor. This lens provides the utmost correction against lateral chromatic aberration which is a serious problem for digital SLR cameras.

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.

The new MACRO 50mm F2.8 EX DG lens incorporates a "Floating Internal Focusing" (FIF) system which enables this lens to photograph objects precisely not only at life-size reproduction but also at infinity. The lens has a minimum focusing distance of 18.9cm (7.4 in) and is capable of true macro photography with a maximum magnification of 1:1. Experience the enjoyment of real life-size macro photography. This lens is equipped with a "Focus Limiter Switch" that limits the auto focus range, allowing the camera to focus more quickly. A screw-in hood is included, for convenient use of circular polarizing filters. It is also possible to attach a 72mm filter in front of the lens hood

• Petal-type Lens Hood
• Front & Rear Lens Caps
• 1 Year International Warranty plus 3 Year Sigma U.S.A. Extended Warranty (Total Warranty is 4 Years from Date of Purchase)

Great lens for the money, March 1, 2009

By R. Hall (Westminster, CO)

I recently purchased a Sony A300 and was looking for an affordable lens for photographing plants and flowers close up as the kit lens that came with the camera is unsatisfactory for macro photography.

I chose the Sigma 50mm F/2.8 EX DG Macro and have found that I made a very good choice. I don't know all the technical in's and out's of a camera lens so I can't really discuss that topic.

But... the day I got my lens I mounted it up, put my camera on a tripod and took some killer macro shots of small plants. I may not know the tech stuff but I do know a great picture and this lens is helping me Best Prices for them.

By ROLLIN MCCARTY (Minneapolis, MN, USA)

This lens has been my primary shooting lens for the last three years on my Nikon D50. The only use left for my my kit lens "AF-S NIKKOR 18-55mm 1:3.5-5.6G ED" is as an 18mm wide angle. This Sigma 50mm f/2.8 prime lens is very sharp. I use it as a portrait lens on my cropped DX sensor camera (eq. 80mm on a full frame FX sensor). It also works great in low light. For portraits, I set f/5.6 if I am only 3-4 feet away. If I am 6-9 feet away I use f/4. You can try to use f/2.8 close-up but you are taking a chance, as the depth of field is so narrow that you might have the eyebrows sharply in focus and the nose and ears blurry. This lens is also very durable. On the negative side, focusing is not super-fast, but that didn't bother me, so I say go for it.

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