When I first started searching for a wide angle multipurpose zoom lens, I shortlisted Canon 18-200mm IS, Canon 18-55mm IS, Canon 17-50mm F2.8 USM, Sigma 17-50mm F2.8 & Tamron 17-50mm F2.8. I read various expert reviews, user reviews and lens comparisons on the internet.

Very sharp in outdoor settings; very good from f3.5/24mm onwards

soft at f2.8; difficult to focus in low light conditions; slow auto focus

A fast aperture standard zoom with Vibration Compensation for Nikon or Canon APS-C sensor digital SLR cameras.

Excellent resolution in the centre at most apertures and focal lengths; Vibration Compensation is very effective; Good value for money

Falloff in resolution at 50mm and f/2.8; Flare control

There are many similarities between the Tamron 17-50mm f/2.8 XR zoom and Sigma's 18-50mm f/2.8 EX, not least because both use professional-grade optics. Deeper under the skin, they share a seven-blade iris and have almost the same dimensions and mass.

Compact and keenly priced

Slight stiffness on zoom ring

Designed for APS-C cameras but with a pro-spec build quality, this sub-£500 optic is a good update to an already popular lens

I have a canon eod-1000 and this is the second tamron lens i'm buying to this camera. I'm happy with the buying the tamron lenses are good. If you can afford to yourself to buy an original lens of canon it's better. But as a tamron product it's A very good lens.

I have to say this is a very impressive lens for the price. It has allowed me to get some great shots of my toddler who never sits still. I can hand hold this at about 1/40th a second if I'm careful to stay still. Sharpness is great threw out the whole range.

VC Focus Speed Aperture

none

Yes, I would recommend this to a friend

Consistent Output; Strong Construction

Heavy; Loud

Finally, a fast, stable lens at an affordable price.

Consistent Output; Durable; Easily Interchangeable; Quick Focus; Sharp Focus; Strong Construction

After a couple of months I started having issues with this lense. It would not focuss. Sometimes i have to press the shooting button several times before i can take the picture. I am very unhappy with this lense. I recomend you not to buy it. Moreover. Dust comes into the lense.

just got it.works pretty good.sharp images.Also I got my rebate really fast,in a matter of days,not weeks.Great service by Tamrone.

Easily Interchangeable; Fast / accurate auto-focus; Lightweight