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05-05-2008, 08:35 AM   #1
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Another Standard Zoom Standoff

The Sigma DC 17-70 is turning out to be a very good lens. Sharpness is there, color is rendering great, focuses fast. There is 2 things I'm not 100% happy with, I would like to see; f/2.8 throughout the zoom for indoor shots without flash. f/2.8 disappears pretty fast by about 22mm. Also, at 17-22 the edge detail is quite soft.

I've asked this before; can anyone give me some feed back on the Sigma EX 24-70. I know I'll lose the wide end and that the 24-70 is 'heavier', neither is an issue.. TIA

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05-05-2008, 09:14 AM   #2
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I can recommend Tamron 28-75. It is F2.8 throughout the range. Very sharp throughout the range as well.

If the QA was better, the Tamron 17-50mm F2.8 could fit the bill as well. But that lens is new with QA issues resulting in FF or BF problems.

Another good alternatinve would be the Sigma 18-50mm F2.8 Macro. Dont get the non-macro version.
05-05-2008, 09:25 AM   #3
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QuoteOriginally posted by Stratario Quote
I can recommend Tamron 28-75. It is F2.8 throughout the range. Very sharp throughout the range as well.

If the QA was better, the Tamron 17-50mm F2.8 could fit the bill as well. But that lens is new with QA issues resulting in FF or BF problems.

Another good alternatinve would be the Sigma 18-50mm F2.8 Macro. Dont get the non-macro version.
Thanks for the info Stratario. However, I wouldn't want to lose the tele end of 70mm so the 16,17,18-50 class is out of the picture. The Sigma EX 24-70 is available locally whereas the Tamron is not.
05-05-2008, 09:35 AM   #4
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I think the Tamron is much higher rated than the Sigma. For me it was worth ordering it from B&H. I had to pay 13% for GST & PST but in the end it is cheaper than buying locally.

05-05-2008, 09:40 AM   #5
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there are quite a few canadian online sites besides henry's and vistek, not sure if they would have it or if they are more competitive: camera canada, mcbain camera, the camera store
05-05-2008, 09:48 AM   #6
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QuoteOriginally posted by k100d Quote
there are quite a few canadian online sites besides henry's and vistek, not sure if they would have it or if they are more competitive: camera canada, mcbain camera, the camera store
I only buy locally, call me old-fashioned. I like putting the lens on the camera, trying it out in-store, etc.

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Consider the subject finished. My LBA is getting the better of me atm and not giving me a chance to really try the 17-70 lens out more. So, with that I'll fight back and keep the 17-70 and not flip-flop anymore.

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05-05-2008, 09:49 AM   #7
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Its a toss up, both are very good lenses.

Sigma AF 24-70mm f/2.8 EX DG macro (Canon) Lab Test Report / Review

Tamron AF 28-75mm f/2.8 SP XR Di LD Aspherical (IF) (Nikon) - Lab Test Report / Review
05-05-2008, 05:47 PM   #8
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Love my Tamron! Actually it along with the Sigma 10-20mm are going to monopolize my camera for the most part.

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