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Sigma 18-50mm F/2.8 EX DC Lens for Canon Digital SLR Cameras
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Sigma 18-50mm f/2.8 EX DC SLD ELD Aspherical Macro Lens for Canon Digital SLR Cameras

Average customer rating:

First Non-Canon Lens I own
So far, so good
Great product
Terrific, versatile lens
A versatile lens for a great price

Sigma 18-50mm f/2.8 EX DC SLD ELD Aspherical Macro Lens for Canon Digital SLR Cameras

Manufacturer: SIGMA
ProductGroup: Photography
Binding: Electronics

All Digital Cameras | Digital Cameras | Camera & Photo | Categories | Electronics

Sigma | Camera & Photo Brands | Camera & Photo Features | Electronics
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Product Features:

Large aperture of f2.8 throughout the entire zoom range
Minimum focusing distance of 7.9 inches with a maximum magnification of 3x
Aspherical lenses offer compact and lightweight construction
SLD and ELD glasses offer excellent correction of color aberrations
Designed to fit Canon digital SLR cameras

ASIN: B000JDJJ82

Product Description

EX lens series denotes excellence of engineering and new technology. Compact and lightweight zoom despite large F2.8 aperture. Excellent correction for various types of aberration provided by one SLD (Special Low Dispersion) glass element and two aspherical lenses. Super Multi Layer (SML) coating reduces flare and ghosting from which digital cameras tend to suffer. F2.8 large aperture standard zoom lens designed specially for use with digital SLR cameras. The characteristics of digital SLR cameras were taken into consideration when designing the lens power layout. The new advanced lens design corrects various aberrations. This lens provides the utmost correction against lateral chromatic aberration which is a serious problem for digital SLR cameras. This lens is specially coated to get the best color balance whilst cutting down flare and ghost caused by reflections from the digital image sensor and lens. It has excellent correction for vignetting and superior peripheral brightness is ensured. A Special Low Dispersion (SLD) lens and two aspherical lens elements provide excellent correction for all types of aberrations. The design produces a compact and lightweight, yet robust, construction with an overall length of 84.1mm (3.3in.) and maximum diameter of 74.1mm (2.9in.) and weight of 445g (15.6oz). This lens has a minimum focusing distance of 28cm (11in.). It is equipped with inner focusing system. The non-rotating front lens element makes the lens suitable for using its petal-type lens hood and circular polarizing filters. It is an ideal large aperture standard zoom lens for digital SLR cameras featuring APS-C size image sensor. *The appearance and specifications of the product are subject to change for improvement without notice.

Customer Reviews:

First Non-Canon Lens I own.......2007-06-25

This is my first non canon lens and im complety surprised... The lens is really sharp from begining to end, its really well built (its a diamond compared to the 18-55 kit lens of any canon), i think is even better builded that my 28-135 IS. Im loving this lens, the only drawback is the macro, dont buy this lens for macro work, the macro function is just a "bonus" that can save you in particular situations... this lens has become the lens that stays in the camera 90% of the time.

So far, so good.......2007-05-12

I bought this lens from Adorama through Amazon about a month ago, and have been using it for 5-20 assignments per week. I shoot for a 25,000-circulation newspaper in the midwest, and typically use either this lense or a canon 70-200 2.8L on a 20D that I've owned for about a year.

The glass is nice, with no apparent abberations. The zoom action is smooth, if mildly stiff. The autofocus is dependable in most lighting situations. The hood that comes with the lens is adequate for blocking out most refracted light. At 18mm, there is no noticeable barrel-distortion, as is common with the Sigma 17-35mm 2.8-4 I used to use.

The primary drawback is the 1.4x conversion of the 20D. On this camera (and any other that doesn't have a full-frame sensor), 18mm is really more like 28mm. This is not the fault of the lens, BUT, if I were to use this lens on a 5D, or anything with a full-frame, I'd be getting vinetting at the corners. Such is life.

The lens is solid, and the macro function is wonderful. Canon sells a real piece-of-crap 50mm f1.8 for $60 that feels like it was made out of balsa wood (my cat recently sent it plunging to a tragic death from a table top). You're better off with this lens--it will give you a nice wide-to-mid zoom, a narrow depth-of field, and the macro will let you do the portrait work that you were probably thinking of doing with the 50/1.8.

Yes, the Canon version of this lens is assuredly nicer, at only two to three times the cost. But just like "every guitar is 90 percent player," every camera is 90 percent shooter. Unless you're using a 5D or better, the canon lens is just overkill. This was an excellent buy for me, and I'm pleased with the product.

Great product.......2007-05-09

This is a great lens, fast focus, very sharp, lightning fast and the build quality is exelent.

Terrific, versatile lens.......2007-04-19

At ~$600 less than the comparable Canon model, this lens is tough to beat! After several hundred shots, it's a keeper for me. I debated between this zoom range and 24-70mm, but found that 24mm was just not wide enough for my 1.6x crop Rebel XT, especially for crowded rooms and landscapes. 50mm (80mm FF equivalent) has been fine for most portraits and that zoom combined with large aperature produces nice bokeh. F2.8 makes it terrific for existing light use, though I do still find my 430EX flash necessary sometimes. I find the lens to have good sharpness at f2.8 throughout the zoom range, and at f4.0 and above it's very sharp. Colors are great. I have had no trouble with flare, or fringing, though I haven't pushed it hard in this respect. Sigma seems to have corrected the flare and CA issues with the first version of this lens. Though it's not a true 1:1 macro, I have found the macro function very useful and lots of fun. That said, the extremely small depth of field with f2.8 and macro has exposed my need for a good tripod! Build quality seems to be very good; zoom and focus are well damped. Autofocus seems accurate to me while being fast and quiet. Highly recommended.

[...]

A versatile lens for a great price.......2007-04-18

Just another vote of confidence for this lens. (I posted this same review at another online retailer, but since I bought it from Amazon, I decided to post it here, too.)

After learning to love prime lenses, it was time to replace the underwhelming kit lens of my Rebel XT with better quality glass. I looked long and hard for a fast zoom that covered the wide-to-medium range despite the XT's crop factor, and finally settled on the Sigma.

Although I haven't laid my hands on the competition (including a similar 17-55mm f2.8 EF-S from Canon for more than *twice* as much, and the slower 17-40mm f4L), I don't regret my purchase at all. I was a bit wary at first about buying a non-Canon lens, especially after reading a few complaints online about bad samples, but the lens turned out to be just fine.

Edge-to-edge sharpness looks great to me, even wide open, and vignetting doesn't seem to be a problem. I'm not a professional, and don't own any L-series glass, but this is far more than I expected for the price.

The macro ability is also a nice bonus, as is the lens hood and case included in the package. I wouldn't call the lens "lightweight" (since I still prefer small primes when I don't need the versatility), but it's still a reasonable fit on the diminutive XT body.

I'm not crazy about the slight sparkle in the powder coat, but hey, that's hardly a complaint. All in all, I couldn't be happier!

Sigma 18-50mm F/2.8 EX DC Lens for Canon Digital SLR Cameras

Average customer rating:

Sigma 18-50mm F/2.8 EX DC
Great lens
Product description QUITE WRONG, and lens has been REPLACED with a better one - don't buy it!
Pretty good lens
Great lens with minor problems

Sigma 18-50mm F/2.8 EX DC Lens for Canon Digital SLR Cameras

Manufacturer: SIGMA
ProductGroup: Photography
Binding: Electronics

Sigma | Camera & Photo Brands | Camera & Photo Features | Electronics

Tiffen 67mm UV Protection Filter
Canon Digital Rebel XTi 10.1MP Digital SLR Camera with EF-S 18-55mm f/3.5-5.6 Lens (Black)
Canon EF 50mm f/1.8 II Camera Lens
SanDisk 2GB ULTRA II CompactFlash Card (SDCFH-2048-901, Retail Package)
Canon Deluxe Photo Backpack 200EG for Canon EOS SLR Cameras

Accessories:

Lowepro Lens Case 1N (Black)
Lowepro Lens Case 1S (Black)
Tiffen 67mm Lens Kit includes Digital Ultra Clear Filter, plus Circular Polarizer Filter and Accessory Wrap
Canon EOS-1Ds 11.1MP Digital SLR Camera (Body Only)
Canon EOS-1D Mark II 8.2MP Digital SLR Camera (Body Only)

ASIN: B0002P19O4

Product Description

To maintain high optical performance from infinity to close-up 1: 1 (life-size) macro photos without accessories, the new Sigma 50mm f2.8 EX incorporates a "floating" element focusing system. Designed as a quick-focusing macro lens the AF speed of 50mm, f2.8 EX Macro is 1.4 times faster than previous 50mm f2.8 macros. It features a non-rotating front lens group, which makes it easier to work with polarizing filters and has a focus limiter. The Sigma 50mm f/2.8 EX Macro lens also features the new deluxe EX external finish. A handy screw type metal sunshade makes it easier to rotate a polarizing filter.

Customer Reviews:

Sigma 18-50mm F/2.8 EX DC.......2007-05-30

Great price for a great walk around lens.

Light weight
Great macro shots
Easy zoom from a wide angel to 50mm for a portrait shots.

Sharp pictures.

Great lens.......2007-01-27

I currently own this lens and the Canon 50mm f/1.8. The 1.8 is clearly better in lower light conditions, but if I had to pick a good all-around indoor lens this would be it. The 18mm range is great for when a prime lens is too close, and the 50mm max length is also very sharp. I'm also satisfied with the build quality.

Product description QUITE WRONG, and lens has been REPLACED with a better one - don't buy it!.......2007-01-12

This is a terrific lens, but Sigma has now re-released it as an 18-50mm F/2.8 EX DC Lens with MACRO capability (can focus down to 8", and 1:3 magnification), for very little additional cost, making this version of the lens essentially obsolete.

Furthermore, the other reviewer is correct that Cameta's (or Amazon's) description is quite misleading. This is NOT the Macro version of this lens. It will NOT give you 1:1 magnification (nor will the Macro version, for that matter, so I'm at a loss as to how such an unrealistic claim found its way into the ad copy!)

To locate the NEW, improved version of this lens, search on:

Sigma 18-50mm 2.8 MACRO CANON (one is also made for Nikons)

Pretty good lens.......2006-09-19

I bought this lens with my Canon Rebel XTi. The default lens that came with the camera was very bad (EF-S 18-55mm f3.5-5.6). I don't recommend it to anyone, it is really a waste of the camera's capabilities, and the pictures you get may not be as good as that from a point and shoot camera.

I am very happy with the Sigma lens. I love the f2.8 feature as it makes indoor pictures (w/o flash) much better. The pictures are pretty sharp in general (especially around the focus point). Beware that taking pictures at f2.8 can be tricky, i.e. while the image center is in focus, the edges and other more distant points may be not be (try increasing the f number if there is sufficient light).

There are three lenses in the market with comparable price & performance: Sigma 18-50mm f/2.8 EX DC, Tamron SP AF17-50mm F/2.8 Di II LD and Canon EF-S 17-85mm f/4-5.6 IS USM. Sigma is the cheapest and the other two are a bit more expensive.

I've just compared my Sigma with a friend's Canon today. The picture qualities were almost identical. Canon was a bit sharper due to Image Stabilization, but f2.8 in Sigma compansates for that. Overall, the picture qualities were very very similar. Canon has a slightly wider range of zoom, but I don't know if it worthy of $150 price delta. The barrel distortion at 18mm is noticeable with both cameras.

The reviews I read online indicate that Tamron and Sigma lenses are pretty similar, although the reviews for Tamron are a bit better. I haven't tested the Tamron yet.

I haven't had any focusing issues with the Sigma. It takes a while to get used to auto-focus function in Rebel cameras and perfect focusing is not 100% guaranteed. But that's true for any lens. You just need to learn how to do it.

I am aware of only one lens which is considerably better than the Sigma: Canon EF-S 17-55mm f/2.8 IS USM. That lens really rocks. Its colors are more saturated and it is sharper due to IS. However, it is _very_ expensive. If you cannot afford it, one of the three lenses above can be your choice. Sigma offers the best value among three, and it has pretty good performance.

Great lens with minor problems.......2006-01-02

I am very happy with my purchase of this lens. I bought it to replace my Rebel XT's 18-55mm kit lens, and it compliments the camera very well. The greatest strength of this lens is its remarkable sharpness. Even 100% crops retain their quality. Shots are even acceptable at f2.8 (better than or equal to the kit lens at f8+), and past f8 the lens is stunningly sharp. I uploaded some shots and 100% crops to amazon in order to illustrate my point. The sharpness of this lens is easily comparable to Canon's 17-40, which says quite a lot.

The corners are not as sharp as the center, especially in wide angles. Outside of the center, the 18-50 is also prone to chromatic abberations/fringing but not worse than almost any other lense. Barrel distortion is present at 18mm but much better than the competition (ie, the 17-40L and 17-85 IS).

Color saturation is good- not as impressive as the Canon 17-40 but still perfectly adequate and very good with a slight software sharpening boost.

The only true negative I have found is a propensity for light lens flare. Even when the sun is out of frame by 20 degrees, flare can still occur. (note that this flaring is not major, and I have often not even noticed it until the second or third time I come back to a picture) I have also noticed flare from street lamps in 10+ second night shots. The lens comes with a decent hood (as well as a pretty nice soft case) in order to help prevent flares. However, I have noticed flaring in cases where the sun was so indirect I never would have thought to attach the hood. The lens cap also cannot be accessed while the hood is on, which is a frustrating design quirk. While, even in the best lenses, flare is not totally avoidable the 18-50 flares much more frequently than other lenses I have used. I don't know if this is an issue with the internal optics or the coatings used on the lens.

Even considering flare problems, I would buy this lens again without a second thought. Its only direct competitor in quality is the Canon 17-40L, which is more expensive, shorter in range, has a narrower max aperture and worse barrel distortion. I am extremely happy with almost every shot this lens generates, and its moderate price makes the 18-50 f2.8 a great companion for the Rebel XT.

Canon Digital Rebel XTi (Black) 10.1MP Digital SLR Camera (Body Only) [in Canon Outfit Box] + Sigma 18-50mm f/2.8 EX DC Lens + Transcend 2GB 120X CompactFlash (CF) Card + Spare Replacement Battery for Canon NB-2LH + Cameta Incognito 1000 Deluxe SLR Gadget Bag

Average customer rating:

Canon Digital Rebel XTi (Black) 10.1MP Digital SLR Camera (Body Only) [in Canon Outfit Box] + Sigma 18-50mm f/2.8 EX DC Lens + Transcend 2GB 120X CompactFlash (CF) Card + Spare Replacement Battery for Canon NB-2LH + Cameta Incognito 1000 Deluxe SLR Gadget Bag

Manufacturer: Canon
ProductGroup: Photography
Binding: Electronics

All Digital Cameras | Digital Cameras | Camera & Photo | Categories | Electronics

6 Megapixels & Up | Digital Cameras | Camera & Photo | Categories | Electronics
Product Features:

KIT INCLUDES 9 PRODUCTS -- All Brand New Items with all Manufacturer-supplied Accessories + Full USA Warranties:
<#1> Canon Digital Rebel XTi 10.1MP Digital SLR Camera (Body Only) PLUS +
<#2> Sigma 18-50mm f/2.8 EX DC Lens + <#3> Transcend 2GB 120X CompactFlash (CF) Card +
<#4> High Speed USB 2.0 CompactFlash Card Reader + <#5> Spare Replacement Battery for Canon NB-2LH + <#6> Cameta Incognito 1000 Deluxe SLR Gadget Bag +
<#7> Digital Image Recovery Software + <#8> Memory Card Storage Wallet + <#9> Cameta Microfiber Cleaning Cloth

ASIN: B000R7755O

Product Description

Kit includes: 1) Canon Digital Rebel XTi; 2) Sigma 18-50mm Lens; 3) Transcend 2GB CompactFlash (CF) Card; 4) USB Card Reader; 5) Replacement Battery for Canon NB-2LH; 6) Deluxe SLR Gadget Bag; 7) Digital Image Recovery Software; 8) Memory Card Storage Wallet; 9) Cleaning Cloth. >>> Canon Digital Rebel XTi includes: NB-2LH Rechargeable Battery; Battery Charger; Wide Neck Strap; Lens Cap & Body Cap; Eyecup; USB Cable; Video Cable; Software CD-ROM; Instructions; Canon USA Warranty. >>> Sigma 18-50mm includes: Lens Hood; Front and Rear Lens Caps; Soft Case; Instructions; Sigma USA Warranty. >>> Canon's Digital Rebel XTi combines imaging excellence, intuitive ease of use and affordability. Even with such marquee features as 10.1 megapixel resolution, Canon CMOS sensor, large 2.5 inch display screen and the remarkable Integrated Cleaning System, the Digital Rebel XTi SLR remains an incredibly affordable option for photographers. >>> Note on Packaging: The Canon Digital Rebel XTi Camera Body you will receive is absolutely 100% BRAND NEW with a Full Canon USA Warranty and was originally packaged as a kit containing the camera body and an EF-S 18-55mm Lens. You will receive the Canon Digital Rebel XTi Camera Body in the original Canon manufacturer's kit box with only the 18-55mm lens removed. The package includes all the original Canon camera accessories such as the Canon USA Warranty Card, Batteries, Chargers, Cords, Instruction Manuals, etc. >>> The Sigma 18-50mm f/2.8 EX DC Autofocus Zoom Lens has a large aperture of f/2.8 throughout the entire zoom range, a minimum focusing distance of 28cm (11") and a maximum magnification of 1:5. Specially designed to suit the characteristics of digital SLR cameras, this lens provides a high level of optical performance.

Canon Digital Rebel XTi (Black) 10.1MP Digital SLR Camera (Body Only) [in Canon Outfit Box] + Sigma 18-50mm f/2.8 EX DC Lens + Transcend 4GB 120X CompactFlash (CF) Card + Spare Replacement Battery for Canon NB-2LH + Cameta Incognito 1000 Deluxe SLR Gadget Bag

Average customer rating:

Canon Digital Rebel XTi (Black) 10.1MP Digital SLR Camera (Body Only) [in Canon Outfit Box] + Sigma 18-50mm f/2.8 EX DC Lens + Transcend 4GB 120X CompactFlash (CF) Card + Spare Replacement Battery for Canon NB-2LH + Cameta Incognito 1000 Deluxe SLR Gadget Bag

Manufacturer: Canon
ProductGroup: Photography
Binding: Electronics

All Digital Cameras | Digital Cameras | Camera & Photo | Categories | Electronics

6 Megapixels & Up | Digital Cameras | Camera & Photo | Categories | Electronics
Product Features:

KIT INCLUDES 9 PRODUCTS -- All Brand New Items with all Manufacturer-supplied Accessories + Full USA Warranties:
<#1> Canon Digital Rebel XTi 10.1MP Digital SLR Camera (Body Only) PLUS +
<#2> Sigma 18-50mm f/2.8 EX DC Lens + <#3> Transcend 4GB 120X CompactFlash (CF) Card +
<#4> High Speed USB 2.0 CompactFlash Card Reader + <#5> Spare Replacement Battery for Canon NB-2LH + <#6> Cameta Incognito 1000 Deluxe SLR Gadget Bag +
<#7> Digital Image Recovery Software + <#8> Memory Card Storage Wallet + <#9> Cameta Microfiber Cleaning Cloth

ASIN: B000R7EB10

Product Description

Kit includes: 1) Canon Digital Rebel XTi; 2) Sigma 18-50mm Lens; 3) Transcend 4GB CompactFlash (CF) Card; 4) USB Card Reader; 5) Replacement Battery for Canon NB-2LH; 6) Deluxe SLR Gadget Bag; 7) Digital Image Recovery Software; 8) Memory Card Storage Wallet; 9) Cleaning Cloth. >>> Canon Digital Rebel XTi includes: NB-2LH Rechargeable Battery; Battery Charger; Wide Neck Strap; Lens Cap & Body Cap; Eyecup; USB Cable; Video Cable; Software CD-ROM; Instructions; Canon USA Warranty. >>> Sigma 18-50mm includes: Lens Hood; Front and Rear Lens Caps; Soft Case; Instructions; Sigma USA Warranty. >>> Canon's Digital Rebel XTi combines imaging excellence, intuitive ease of use and affordability. Even with such marquee features as 10.1 megapixel resolution, Canon CMOS sensor, large 2.5 inch display screen and the remarkable Integrated Cleaning System, the Digital Rebel XTi SLR remains an incredibly affordable option for photographers. >>> Note on Packaging: The Canon Digital Rebel XTi Camera Body you will receive is absolutely 100% BRAND NEW with a Full Canon USA Warranty and was originally packaged as a kit containing the camera body and an EF-S 18-55mm Lens. You will receive the Canon Digital Rebel XTi Camera Body in the original Canon manufacturer's kit box with only the 18-55mm lens removed. The package includes all the original Canon camera accessories such as the Canon USA Warranty Card, Batteries, Chargers, Cords, Instruction Manuals, etc. >>> The Sigma 18-50mm f/2.8 EX DC Autofocus Zoom Lens has a large aperture of f/2.8 throughout the entire zoom range, a minimum focusing distance of 28cm (11") and a maximum magnification of 1:5. Specially designed to suit the characteristics of digital SLR cameras, this lens provides a high level of optical performance.

Electronics:

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