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04-16-2010, 06:27 AM   #1
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Sigma 120-400mm f4.5-5.6 APO DG OS Anyone?

Does somebody have experience with the new Sigma 120-400mm f4.5-5.6 APO DG OS?

I've a few questions:
- How does it hold at the long end, sharpness?
- AF in low light with K-7, any experiences?
- How effective is the Sigma OS compared to the in camera SR?

I'm needing longer quality glass than my DA* 60-250mm....

Bert

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120-400mm, 120-400mm f4.5-5.6 apo, apo, apo dg os, dg, f4.5-5.6, f4.5-5.6 apo dg, k-mount, os, pentax lens, sigma, sigma 120-400mm f4.5-5.6, slr lens
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