Sigma 17-50mm f2.8. Worth the money?

Mutt said:
Back to reality for a moment. I guess I'm screwed if the lens has forward/back focusing issues with it being a grey import. I know Tamron won't touch the lens if it doesn't have an EU warranty. Have any of you ever had to return anything to DigitalRev?
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Not a return but they paid for the repair of my Canon S100 when the zoom lens failed after a couple of months, no hastle at al from their end even though the repair cost 50% of the value of the camera. Couldn't have been happier with the service.
 
Mutt said:
How long have you had it and have you noticed any deterioration in its focusing ability? The reason I ask is because I read a customer review which said the lens started to have focusing issues after 5 months. I'm pretty sure that'll be a one-off.
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No noticable difference in focus, it is a bit soft at 17mm stopped right down but not a problem. As with all these lenses they are best in the middle of their aperture range.
 
a1ex2001 said:
Not a return but they paid for the repair of my Canon S100 when the zoom lens failed after a couple of months, no hastle at al from their end even though the repair cost 50% of the value of the camera. Couldn't have been happier with the service.
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Wow, that's excellent service. It gives me a lot of confidence should anything go wrong with my Tamron.


apeksdiver said:
No noticable difference in focus, it is a bit soft at 17mm stopped right down but not a problem. As with all these lenses they are best in the middle of their aperture range.
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I was aware of the softness at 17mm. Most of the reviews that I've read refer to it. Shouldn't be too much of a problem for me because my images will be resized to less than 1000px which will make the softness virtually undetectable I imagine.
 
Well I got my Tamron 17-50mm from DR today (3 days quicker than the given delivery date) and I absolutely love it. It's tack sharp at every focal length other than 50mm. I tell a lie, its sharp at 50mm just in the wrong place. There seems to be a wee bit of back focusing going on but not enough to cause me too much concern. Switching over to manual focus soon sorts that, either that or focusing slightly in front of what you want to be in focus. I may end up getting the back focusing fixed but not in the very near future.

From the youtube videos I've watched I was expecting the lens to be much noisier than it actually was. I can definitely live with it.
 
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