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Tamron 17-50mm F/2.8 XR Di II LD Aspherical [IF]

1750diII
Review Date: May 27, 2009 Recommend? | Price paid: Not Indicated

 
Pros: Affordable price, small compact size, comes with hood, wide aperture
Cons:
Very soft images at wide aperture, noisy autofocus, average buoild quality

In my opinion, this lens is not worth the money paid. I bought this lens last winter after reading numerous praises regarding it's capability to capture sharp images with excellent IQ even at wide aperture. However to my dismay I later find out that images taken at f2.8 were very soft and certainly not up to my expectation. Even after stopping down to f5.6 the sharpness only improves a little. I send it back to Tamron Service Centre (UK) for recalibration and it took another 3 weeks before they returned it back to me. However to my diasppointment there doesn't seems to be any differences in IQs. I continue to use this lens until I bought the EF-S 17-55mm f2.8 IS and the IQs produced by this lens just blew me up! When compared side by side images taken at f2.8 with the EF-S lens were much sharper and richer in colour. In fact it almost rivals my EF-s 60mm f2.8 Macro lens (but not quite near the quality considering that this is a prime). In conclusion I would recommend people to look away at another alternatives if you're looking for a fast zoom lens. Although they are much more expensive, in the long run the IQs produced are way better and worth every cents spent.

 
Tamron 17-50mm F/2.8 XR Di II LD Aspherical [IF]

1750diII
Review Date: May 27, 2009 Recommend? no | Price paid: $250.00 | Rating: 5 

 
Pros: Lighweight Wide f/2.8 aperture Cheaper compared to other alternatives Comes with hood
Cons:
Poor image quality and sharpness Noisy autofocus Poor build quality

I bought this lens for my EOS 40D last winter after reading numerous praise about the IQ produced by this lens and its capability to produce sharp images even at f/2.8. However to my disappointment images taken at f/2.8 came out very soft and certainly not up to my expectation. Even after stopping down to f5.6 there were only minimal increase in image sharpness. I ran some quick focusing test and found that this lens suffers from back focusing. I sent it back to Tamron Service Centre (UK) for recalibration, explaining about the problem and it takes 3 weeks before the lens is returned back to me. However, to my disappointment (again!) there doesn't seems to be any changes at all interms of image quality/sharpness. I continue to use this lens for a while before buying a second hand Canon EF-S 17-55mm f2.8 IS and the resulting images were like heaven and earth! Images taken with the Canon lenses are extraordinarily sharp, almost as sharp (probably up to 70% at comparable aperture) as my EF-S 60mm f2.8 Macro prime lens. Therefore is you're looking for a fast general purpose zoom lens, I would suggest to look at better alternative (like the amazing EF-S 17-55 f2.8). Although other alternatives are more expensive but in the long run the IQ worth every cent spent.