Is Sigma 18-35 AF really bad on Pentax body

Started Sep 7, 2016 | Questions thread
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Twong Contributing Member • Posts: 849
Is Sigma 18-35 AF really bad on Pentax body

While trying to quench the LBA thirst, I have been searching for potential cure. The Sigma 18-35 has been at or near the top of my list. While it is clear that this lens is optically superior, which is why I am looking into it, some of the reviews reported very poor to completely unusable PDAF with Pentax bodies. CDAF is not affected, however.

I am appealing to this forum members your first hand experience with regard to PDAF.

 Twong's gear list:Twong's gear list
Olympus PEN E-PM2 Pentax K-3 II Pentax smc FA 50mm F1.4 Pentax smc DA* 50-135mm F2.8 ED (IF) SDM Sigma 70-200mm F2.8 EX DG OS HSM +18 more
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Sigma 18-35mm F1.8 DC HSM Art
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