Sigma 18-200mm f/3.5-6.3 DC AF OS

Last updated (13 May’10):
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Sigma 18-200mm F3.5-6.3 DC is exclusively designed for use with digital SLR cameras featuring APS-C size image sensor. It’s a Compact, Lightweight and Durable construction lens with diameter of 70mm (2.8″), length of 78.1mm (3.1″) and weight of 405g./14.3oz. The lens is featuring two Special Low Dispersion (SLD) glass elements and two hybrid aspherical lenses offer the utmost correction for all types of aberrations, new lens coating to reduce flare and ghost, which is a common problem of digital cameras and also creates an optimum color balance.

Sigma 18-200mm f/3.5-6.3 DC AF OS
Overall Rating: ★★★★☆ | Check Availability

Expert Reviews

Sigma 18-200mm f/3.5-6.3 DC AF OS Reviews reviews the Sigma 18-200mm f/3.5-6.3 DC AF OS and writes;
“The 18-50 mm range is just excellent and it can substitute any kit lens for sure. Additionally, we have longer focal lengths at our disposal which, although not so good as the first part of the range, are nevertheless available without the necessity of changing lenses. If only the stabilization system was more efficient the Sigma would be a highly recommendable lens to every amateur photographer who is looking for an all-purpose optical device. “
Rating: N/A reviews the Sigma 18-200mm f/3.5-6.3 DC AF OS and writes;
“SQF results showed Excellent sharpness and contrast at the four tested focal lengths. This beats most of the Sigma’s superzoom competition, which usually dips into the Very Good and Good ranges at the long end.”
Rating: N/A reviews the Sigma 18-200mm f/3.5-6.3 DC AF OS and writes;
“At a zoom ratio of 11.1:1, this 18-200mm optic is a result of some well-balanced compromises though. As is usual in this type of lens, the wide end is better than the longer end in general, but does suffer some distortion. Barrel distortion is just evident at the wide end of the zoom, turning to negligible pincushion by the time the telephoto end is reached.”
Rating: ★★★★★ reviews the Sigma 18-200mm f/3.5-6.3 DC AF OS and writes;
“The lens offers the highest resolution of any in this category, and while the 18mm curve is very convex, it’s still a high resolution. Similarly at 200mm, the lens shows it’s possible to get decent resolution from a superzoom. Fringing lets it down, though, with an average performance across the range. Still, for a superzoom lens, this is a consistent performer.”
Rating: ★★★★½ reviews the Sigma 18-200mm f/3.5-6.3 DC AF OS and writes;
“Sigma 18-200mm f/3.5-6.3 DC was average in the field. Vignetting was mostly under control except at 18mm, where you might want to stop down to achieve best results. Chromatic aberration persisted throughout the zoom range primarily around borders. The lens produced best results in the 18-50mm focal length range. Both center and borders in this zoom range were reasonably sharp – quite a surprise for me.”
Rating: N/A reviews the Sigma 18-200mm F3.5-6.3 DC and wrotis;
“Bokeh was pleasing with wide lens apertures, especially at longer focal length settings. Flare was common – and quite obvious – in shots taken with the lens pointed towards the sun, even though the sun was well out of the shot. However, backlit subjects were handled reasonably well when the front element of the lens was totally shaded.”
Rating: ★★★★½

DPExpert reviews the Sigma 18-200mm F3.5-6.3 DC and wrotis;
“Like: Construction quality is good and the lens is amazingly compact. The zoom mechanism has sufficient friction that the lens doesn’t slide out when it is held vertically which is an annoying tendency in some kit zooms. Dislike: The slow focus and the warm colour. Verdict: There is an objective scientific review of this lens on the German fotozone site. Their conclusion is that the lens involves the compromises to be expected in such an ambitious zoom range in such an inexpensive lens. ”

CameraLabs reviews the Sigma 18-200mm F3.5-6.3 DC and writes;
“So an 18-200mm could be the ideal lens for you, but since the Sigma and Tamron models essentially cost the same, which one should you go for? Ultimately there’s not a great deal between the Sigma and Tamron 18-200mm lenses. A couple of our results favoured one over the other, but neither took a decisive lead overall…. In terms of our results, it also took the lead in corner sharpness and vignetting at wide angle, although the macro reproduction was less impressive.”
Rating: ★★★★☆

Photozone reviews the Sigma 18-200mm F3.5-6.3 DC and writes;
“There’s no such thing as a free lunch in lens land and the Sigma AF 18-200mm f/3.5-6.3 DC is no exception here. The resolution figures are generally quite decent and regarding the extreme zoom range you may accept the very pronounced distortions present throughout the zoom range as well as a few other shortcomings. Unfortunately the AF accuracy leaves something to be desired with this lens especially towards the long end of the zoom range – at least on the EOS 350D. Typically such a type of lens is used by beginners on entry level DSLRs where a rather dark viewfinder combined and an average AF system don’t really help here. “

SLRGear reviews the Sigma 18-200mm F3.5-6.3 DC and writes;
“Chromatic aberration in this lens is high at both ends of the zoom range (wide and telephoto), but is relatively low over a range of medium focal lengths. Vignetting is moderate to low, with a maximum of about 1/2 stop at wide angle and maximum aperture. Stopped down to f/5.6, it’s never more than 1/4 stop at focal lengths of 88mm and below, only slightly higher at telephoto focal lengths, and often quite a bit lower. Distortion covers quite a range, from about 1% barrel at 18mm, to about 0.6% pincushion at 50mm, finally decreasing to about 0.4% at 200mm. (Interestingly, all three lenses in this competitive group show nearly identical distortion behavior.)”

User Opinions

Sigma 18-200mm f/3.5-6.3 DC AF OS User Reviews

excellent lens for nearly half the price of nikkor | Rating: ★★★★★
“Before I decided to go for sigma I hesitated for a long time. I almost purchased nikon’s similar lens, but then after going through every possible review I could find, I realized that nikon just doesn’t worth the double price. I am very happy with my decision and satisfied with the lens. “ – by Vitalia “vittikapitany”

Great value! Great lens!, | Rating: ★★★★★
“I bought this lens after reading all the great reviews and I’m very happy I did. I find it to take better pictures than the 18-55mm kit lens that came with my Canon 450D. I’m very please with the sharpness and clarity of my pictures. This will probably be my shooting lens for 90% of the time. I could not give it less than 5 stars, it wouldn’t be fair, it is heavy and big but it’s expected. Absolutely in love with it, you wont regret it! “ – by Enrique Gonzalez

Great alternative to Nikon’s version and great OS, | Rating: ★★★★★
“This lens is amazing and has a great price!!! I’ve used this lens a lot since I bought it because it is just so versatile. It’s focus is fast and positive but sometimes hunts (but still not a problem). This lens handles beautiful. The only thing that this lens could have to make it even better is manual over-ride. This lens, for the price is sooo much better than Nikon’s version. The glass is excellent. It is really top quality. All I have to say is buy this lens over the Nikon’s version. The OS is great (almost as good as VR) and the lens works very well (even in tough conditions). Great lens for a great price. “ – by Gregg Parker

If you want sharpness, this isn’t what you are looking for, | Rating: ★★★★☆
“Focal length is great. The lens is well built. The price is quite reasonable as well. The piece that I got didn’t have any focusing issues either. But I was expecting it to be very sharp. It is sharp enough if you store your images online and view it zoomed out at 25%. But if you are looking to print your images, you might have to run them through Photoshop a bit to fix the softness. I would recommend it for a casual photographer who wants to carry just one lens while roaming around. I have taken out one star for its lack of sharpness. “ – by Amar Saleem

Great lens for the money, | Rating: ★★★★☆
“I bought this lens for my son’s wrestling tournaments and was not disappointed. Even indoors without a flash it was fast enough for great shots when they weren’t moving too fast. Reviews said the Canon and Tamron superzooms have better IQ, but they cost $200 more, and I wasn’t ready to spend that. I’m keeping the lens on the camera more and more, only changing for my 50mm 1.4 for portraits or when I need the best IQ. For a single walkaround lens, for the money, I don’t think it can be beat. “ – by PerryNH

A fantastic lens for the prosumer. We highly recommend this lens for the money! | Rating: ★★★★★
“I was very happy to see that this lens was built with terrific quality and was very stout. We are using it with our Canon Digital Rebel XTi and we couldn’t have been happier with the performance. This is our first telephoto lens that we have purchased so please know that we don’t have much to compare it to. However if you are like us “prosumers” on a budget and hunting for a nice lens in this price range, look no further. “ – by John L. Mast

Sigma 18-200 | Rating: ★★★★☆
“All around travel lens, saved alot of weight by just having one lens, not as sharp or fast as the other Canon lenses but for the price it’s well worth it. “ – by D. Tom “Dave”

Ideal lens, | Rating: ★★★★★
“I photograph portraits and weddings all year long and I have always been very satisfied with the sharpness and the color hues in this lens. Many people believe that a brand name lens (Canon, Nikon) is always better and more rugged than an independent brand. Judging from my experience with this brand, SIGMA lenses (I have three Sigmas) have always been of top quality. “ – by L. Da Vinci “Renaissance Man”

More user opinions | Write your opinion

Features & Specifications

Sigma 18-200mm f/3.5-6.3 DC AF OS Specifications

The Sigma 18-200mm high-zoom-ratio lens is designed exclusively for Canon digital SLR cameras and is capable of covering a wide range of focal lengths, from wide-angle to telephoto. Two Special Low Dispersion (SLD) glass elements and two hybrid aspherical lenses correct for all types of aberrations, letting Sigma house the extended-range super-zoom lens in a compact and lightweight body that measures 70mm in diameter and 78.1mm long and weighs a mere 14.3 ounces. The new lens coating, meanwhile, reduces flare and ghost–a common problem shared by many digital cameras–while also creating an optimum color balance. Other details include a minimum focusing distance of 45cm (17.7) at all focal lengths, a high zoom ratio of 11:1, and a maximum magnification of 1:4.4.

The lens design incorporates an inner focusing system that prevents the front of the lens from rotating, making it particularly suitable for using circular polarizing filters and petal-shaped lens hoods. In addition, the overall length of the lens never changes during focusing, making the lens convenient to handle and easy to use. Finally, the lens’s zoom lock switch eliminates “zoom creep” during transport–a convenient addition when traveling. The lens, which includes a metal mount, is backed by a one-year warranty.

• Focal Length :18-200mm
• Minimum Aperture :F22
• Lens Construction :15 Elements in 13 Groups
• Angle of View :76.3degree- 8.1degree
• Number of Diaphragm Blades :7pcs
• Minimum Focusing Distance :45cm (17.7in)
• Maximum Magnification :1:4.4
• Filter Size :62mm
• Lens Hood : Petal Hood
• Dimensions :Diameter 70mm (2.8in) x Length 77.6mm (3.1in)
• Weight :390gr/13.8oz

More Info is available on Sigma 18-200mm F3.5-6.3 DC Official Website

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