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Large aperture zoom lens designed specially for use with digital SLR cameras and includes a minimum focusing distance of 20cm.This lens is specially designed to suit the characteristics of digital SLR cameras and provides a high level of optical performance. It has a large aperture of F2.8 throughout the entire zoom range, offers superior peripheral brightness as well as a compact and lightweight construction. A maximum magnification of 1:3, makes this lens ideal for close-up photography.A Minimum focusing distance of 20cm and maximum magnification of 1:3This large aperture standard zoom lens, with close-up ability, is ideal for all types of photography including portraits, landscapes and snap shots.Large aperture of F2.8 throughout the entire zoom range The constant large aperture enables easy confirmation of focusing through a bright viewfinder. This lens is perfectly suited for low light conditions indoors or at dusk. Excellent optical design Special Low Dispersion (SLD) and Extraordinary Low Dispersion (ELD) glass elements provide excellent correction of colour aberrations. This lens produces an exceptional level of optical performance. Compact and lightweight lens Its design incorporates both glass-mold and hybrid aspherical lens technology which offers a compact and lightweight construction. Reduced Ghosting and Flare This lens has excellent correction for vignetting, a common problem with large aperture lenses. Its new design ensures superior peripheral brightness. The super multi-layer lens coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. Inner Focus System The lens is equipped with an inner focusing system. The non-rotating front lens element makes the lens suitable for using its petal-type lens hood and circular polarising filters.
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Technical Details
- AUCH FüR D 40/D 40 X !See more technical details
By M. G. A. Kerby (Manchester, UK)
Sigma 18-50mm f2.8 EX DC Macro Digital Zoom Lens For Canon Mount
For about 6 months I used a Canon 17-40mm f/4 L series lens and decided I wanted a faster lens. The 17-40L is fantastic; all I needed for most outdoor shots, very wide and of course usable on full frame/35mm Canon SLRs. However, it was f/4 and I wanted an f/2.8 like my telephoto lenses to allow me to use it in churches/houses with less need for higher ISOs and flash.
My options were the Canon 16-35 f/2.8 L II, which is very very expensive, but of similar build quality to my 17-40L. I couldn't justify the ridiculous price tag, especially seeing as I was using a cropped sensor camera. My other considerations were the Tamron 17-50 f/2.8, which I found too plasticy, though very similar in shape/external design and the Tokina 16-50mm f/2.8 which I opted against.
The Sigma 18-50 is very good; coming with a lens case, lens hood and both caps needed, all I needed to buy extra was a UV filter. It has been given the EX finish label, which I sort of disagree with even though it is fairly heavy and well built it is not anywhere near as well built as my Sigma 70-200mm f/2.8 which is also an EX lens. Anyway here's a list of pro's and con's to weigh up:
Pros
- Constant f/2.8 aperture: This is very useful indoors and to an extent for shallow DOF work
- Close focusing distance allowing for 1:3 macro focusing (useful for flower photographs and close up portraits)
- Smooth zoom and focusing rings
- Fast auto-focus
- Fairly decent build quality, certainly better than the Canon kit lenses and the Tamron 17-50mm lens.
- Non-rotating front element (good for filters)
- Zoom lock: good to stop the lens from creeping in zoom
- Accurate auto-focus, good keeper rate
- Very nice lens cap - the new Sigma lens caps are easy to remove with the hood on
Cons
- Lens extends while zooming becoming largest at 50mm
- Noisy autofocus compared to HSM (or USM)
- Not upto most Sigma EX lenses build quality, this could be because its not a DG lens
- No focusing window, although I rarely use that on other lenses to be honest.
Verdict:
This lens is very good. After having it for a few months I've gotten used to it and took some good photos with it. Its auto-focus is very accurate and I find that important in a lens today. I recommend it for anyone with a 1.6x crop sensor: 350D, 400D, 450D, 500D, 1000D, 20D, 30D, 40D, 50D
By D. McFarlane (Yorkshire, UK)
I've had this lens for a short while now and have taken it out on a few trips. Essentially this represents a faster version of the standard kit lens that I got with my 20D, so it's a reasonable general purpose lens for day-to-day use.
I found that it took a bit of getting used to this lens to finesse the focus and get sharpness into my photos. It can be a bit soft wide open, but normally I have no complaints.
Essentially paying this sort of price for a constant 2.8 lens with some Macro functionality you can't really complain. Construction has a solid feel to it and, as usual, Sigma supply you with a hood and, indeed a lens carry case as part of the deal.
By R. C. Cooper (Liverpool UK)
I bought this lens from the auction site about 6 months ago.
The one thing this lens made me realise was how poor the kit lens that came with my Canon EOS 300D actually was. And I had never had any complaints about that lens whilst using it.
The results from this lens are razor sharp and the colours are superior. The difference in results from upgrading to this lens where what I was expecting from upgrading to a new camera.
Beware though, it is very heavy and seems prone to ugly green lens flare when taking shots with the sun in view (even with the hood) but other than that I can't recommend it enough. I am now saving for the Sigma 10-20mm rather than the EOS 40D because I've realised its best to invest in glassware.
By Don Pelayo (Asturias)
This is a very good value for money lens , for less than half the price of the canon equivalent this lens performs as well ( and some argue than performs even better ).
It weights nearly half a kilo but is well balanced and feels strong in the camera. The EX DC range of sigma is similar to the L IS in canon for more image sharpness.
This is a lens that ,along with a good telephoto 80-200 ,will complete most amateur photographers kit.
I take 80 % of my pictures with this lens, is great for portraits ,landscape and interior shots.
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Buy Sigma 18-50mm 2,8 EX MACRO DC HSM Objektiv für Nikon Now
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