Sigma 105mm f/2.8 EX DG Medium Telephoto Macro Lens for Canon SLR Cameras

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Price: $589.99   

Product Feature

• Compact and lightweight medium telephoto macro lens.
• Optimized image quality for Digital SLR cameras.
• Maximum magnification of 1:1
• Focus Limiter Switch that limits the AF range so improving the speed and accuracy of auto focus
• Dual Focus (DF) system that is designed to make the lens easy to hold during auto focusing

Product Description

The Sigma 257-306 105mm F2.8 EX DG Macro lens for Canon SLR mount is very suitable for taking pictures in nature, while it uses natural light conditions or flash. The greater working distance of this lens is very advantageous when taking the picture of a flower among the branches or an insect. The narrow angle of view is a great aid for simplifying backgrounds and shallow depth of field makes it easier to handle the composition. This lens would have an equivalent field of view of a 178mm telephoto macro lens on a digital SLR camera. This new medium telephoto macro lens employs a new design concept for digital SLR cameras. Its power layout produces an excellent optical performance and also reduces flare and ghost. This lens is designed to reduce the influence of harmful light caused by reflections from the digital image sensor. A screw-in hood is included, for convenient use of circular polarizing filters. It is possible to attach a 77mm filter in front of the lens hood. This lens also incorporates a Dual Focus (DF) system that is designed to make the lens easy to hold during auto focusing. The large focus ring offers smooth and positive action whilst focusing manually. Weight - 16.1 ounces (457 grams)

Sigma 105mm f/2.8 EX DG Medium Telephoto Macro Lens for Canon SLR Cameras Review

When I first started looking for a mid-level macro lens, a few weeks ago, I was naturally drawn first to the Canon 60mm, as I have already have 2 Canon bodies.

But then I started looking around, reading reviews (mostly on Fred Miranda's site), and comparing prices. The more research I did, the more appealing this lens became. And finally, I decided to go with it.

Here's why:

- The price is similar to the Canon 60mm.

- I already own a Sigma EX-series lens (17-35mm), and really like it. I like the matte finish, and the glass is excellent.

- For some reason I cannot fathom, Canon doesn't include lens hoods with any of the mid-range lenses I looked at. Sigma does.

- The greater focal length means I can stay farther from the subject - minimum focus distance is about 30cm (12in). This is almost always a benefit.

This lens isn't perfect, however, and here's a few caveats you may want to consider before making a purchase:

- In low light (ie, most macro photography), this lens likes to hunt. Which can be a slow process considering its length when fully extended. Personally, I don't mind manual focus all that much, so this doesn't bother me.

- This is a not an HSM (Sigma's version of USM) lens. It is motor-driven. This might bother you, but I barely even notice it.

- Switching to/from manual/autofocus mode is a 2 step process. Beside the switch on the side of the barrel, the focus ring requires a push-pull motion which is sometimes a bit tricky. With a little practice, this becomes less and less of an issue - and if you leave it on manual most of the time (as I do), you seldom have to worry about it.

- The lens hood is a screw-in, not a twist- or clip-on model. This is, however, offset by the rather deep recession of the glass in the lens tube. (If you want to use the lens hood and leave it on, a 77mm lens cap will fit it.)

Despite these (in my opinion, very minor) problems, I'm very happy with this lens, and would definitely recommend to anyone looking for a mid-level macro lens

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