Tried to save some money by buying an after market product. Did not take go pictures when lens was entended out to 70mm. Built cheap. You get what you pay for. Taking back. Going to get the actual Canon lens.

[...] I HAVE TRIED THIS LENS ON MY NIKON D300S AND WAS DISAPPOINTED WITH THE PICTURE QUALITY NOT TO MENTION THE COST OF THIS LENS.

Durable; Well Made

Poor picture quality

I bought it used at 211 pounds and for that price the lens is superb. The quality of the image is great and focus perfect & fast on my Nikon D7500. Much sharper than my old Nikon 16-85mm lens.

Fits the bill as the perfect walk around lens for my 77D. Image quality is very good with nice color rendition and weighs half as much as the 24-105 f/4L. If you shoot both full frame and crop sensor I say get this lens for your crop sensor camera and leave your 24-105 f/4L on you full frame camera.

I tested the lens taking many pictures with my D7000 and D600. The pictures were not as good as I expected

The Sigma AF 17-70mm f/2.8-4 DC HSM OS is a fairly obvious candidate for budget oriented consumers. It may not reach stellar performance levels but the resolution figures are generally very decent.

The kit lenses you get with digital SLRs are good value, but they're not always terribly good lenses. The problem is though, that the next step up from the camera maker's own lens range is a big one. For example, Canon's EF-S 17-85mm has a list price of £600 and Nikon' 16-85mm is £550.

I purchased this lens as an upgrade for my Canon 400D 17-55mm kit lens about 6 months ago. I am glad I did! It’s a little gem, that seems to get over looked. I did plenty of research before parting with my cash, and had my eye on the Canon 17-85mm EFS.

Hands down best lens for the money. While it's not Nikkor, it is also not over $1k. When my original lens broke after 4 years of abuse (I live in East Africa) I replaced it with a different Sigma. After not getting the same quality shots I bought this one again.

Clear and accurate website Competitive prices Great comunications throughot keeping me informed of the progress o my order at all times