Sigma 17-70mm f/2.8-4.5 DC IF Macro Lens for Sigma Digital SLR Cameras
- Large aperture standard zoom lens designed Specially For Digital SLR Cameras. Macro lens level close up ability
- Minimum focusing distance of 7.9.., maximum magnification of 1:2.3.
- The new multi layer lens coating and lens design reduce flare and ghosting l
- Aspherical and SLD lenses, offer excellent correction for various aberrations.
- The lens offers a large aperture of F2.8 at wide angle.
Sigma Corporation is pleased to announce the launch of the new 17-70mm F2.8-4.5 DC MACRO lens. It can be used with wide variety of subjects and it is an ideal large aperture standard zoom lens for digital SLR cameras featuring APS-C size image sensor. This lens has a minimum focusing distance of 7.9.. (20cm) throughout the entire zoom range. Maximum magnification of 1:2.3 enables close-up photography like a macro lens. The new lens design and multi layer lens coating reduce flare and ghosting, which is a common problem with digital cameras. A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations and produce a high level of optical performance throughout the entire zoom range. This lens offers a large aperture of F2.8 at 17mm wide angle and yet it is compact, with an overall length of 82.5mm (3.2..) and diameter 79mm (3.1..). It performs superbly even in relatively low light conditions indoors or at dusk. The len
List Price: $ 369.00
Price: $ 362.71
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Sharp, smooth, good colour,
Obviously I was luckier than the previous reviewer: my first copy was, and is, fine.
I use my Sigma with a Canon 400D (XTi in the US). I also have a Canon 50mm lens that’s supposed to be really sharp. Maybe I have a bad copy of that, because the Sigma is definitely sharper. In fact I was disappointed with the camera until I bought this Sigma lens.
Now I get images that are sharp and colourful, yet with that smooth SLR look that was evading me when using the Canon lens. I’m very pleased with it.
One thing that surprised me was how big and heavy it is though. People look at me as though I have a long zoom (it extends quite a way at 70mm), even though it’s really not.
But, you get used to it pretty soon.
I guess it had to be big to get the f/2.8. Trouble is, at about 20mm you lose the f/2.8, so it’s not quite as good as it sounds. This lens loses out on that score to the constant f/2.8 17-50 lenses from Tamron and Sigma.
The compensation is that you get a bit of extra reach, which makes it more of an everyday lens.
And the trump card is that you can get really close with this lens. Minimum focus distance is 20cm. Doesn’t sound that great, but that’s 20cm from the sensor, not the end of the lens. Zoom all the way to 70mm and you can focus on stuff that’s almost touching the glass!
I like the feel of the lens. It’s very solid and attractively finished, feels expensive.
You get a lens hood in the box, unlike when you buy a Canon lens.
The only thing I don’t like is that the focus ring moves in auto focus and I find it often catches on my hand. No big deal.
All in all, a great lens.
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|Outstanding Performance On A Budget,
This is the first non-Canon lens I’ve purchased and the Sigma 17-70/2.8-4.5 DC surprised the hell me with its fine performance. Zoom range, speed, resolution, low Chromatic Abberation, fast/sure autofocus speed and solid build quality make this lens stand head and shoulders above the typical cheap Canon kit lens such as the terrible Canon EF 18-55/4.5-5.6. Plus the Sigma has 1:2.3 macro capabilities with very sharp results…AMAZING! I’ve read more and more reviews all over the Internet on this Sigma lens that praise its qualities. This lens will compete with Canon lenses costing two and 3 times as much (EF 17-40, EF 18-50/2.8, EF 16-35/2.8). The Sigma 17-70 is constructed with one SLD low-dispersion glass element which is responsible for its excellent lack of Chromatic Aberation. At this price I never expected that kind of quality. Highly recommended!
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