Excellent at the K-5

Excellent at the K-5

Sigma 17-50 mm F2.8 EX DC HSM Lens (77mm filter thread) for Pentax lens mount (Electronics)
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Customer Review

Use the lens for a month at the K-5th Autofocus camera for internal correction (-4) Top, 99% hit rate. Focus top also open, immaculate from f4 also in the corners at 17mm. The only drawback: the focusing ring rotates and the zooming ring is "upside down". For the current price a "NoBrainer".

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