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07-19-2010, 06:57 AM   #1
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Help me decide!

I was thinking about getting the Tamron SP 28-75mm f/2.8 XR Di LD-IF or the Sigma 50-150mm EX DC HSM II.. Then I thought about getting the Sigma 24-70mm f/2.8 EX Aspherical IF EX DG HSM but for $899 the reviews were kind of poor. I cant decide which lens to get! I sold all my older film lenses to get a fast AF lens with a F2.8. I heard the Tamron has excellent IQ but has super slow AF. And I read the Sigma 50-150 is soft after 100mm ... I was actually leaning towards the sigma 24-70 from the start but every review I read is not good...If anyone has any of these lenses can you tell me how it is?


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07-19-2010, 08:21 AM   #2
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That's quite a wide variety of focal lengths. What are you going to be using this lens for?
07-19-2010, 08:29 AM   #3
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All I can say is that Tammy is a wonderful lens, and I don't even own one, so it's not like I'm bragging about equipment that I own.

I also think length-wise, it will serve you better than a 50-150, but as said, it depends on what you like to shoot.
07-19-2010, 08:40 AM   #4
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The Tammy has the magnification on APS-C right?

07-19-2010, 10:54 AM   #5
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Not sure what you mean by that. If are intimately familiar with the field of view provided by different focal lengths on a 35mm film camera, then the Tamron - like every lens ever made - will seem "longer" on APS-C. There is no difference betwene lenses in this regard. If you're not intimately familair with the fields of view of different focal lengths on 35mm film, then you - like most people in the world - have no reason to care about "crop factors". All 28mm lenses produce *exactly* the same field of view a given camera which is to say, about "normal", not wide. Just like the kit lens (18-55) when set to 28mm.
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