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07-13-2009, 10:59 AM   #1
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Join Date: Jun 2009
Location: Dallas, TX
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Posts: 26
Sigma 70-300mm vs Pentax 55-300mm

I have the Sigma 70-300mm (non APO) and am reasonably happy with it. However, I just got the K7 and there is a rebate for the 55-300mm.

Does Pentax 55-300mm offer a significant quality increase over the Sigma 70-300mm (non APO)? It's about $200 more for it, but if the IQ is far superior, then I would want to upgrade, especially with the rebate in mind.

Also, does anyone know if a TC is available for the Pentax 55-300mm? Preferably one that I could still us AF with?


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55-300mm, 70-300mm, apo, k-mount, pentax, pentax lens, rebate, sigma, slr lens
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