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01-18-2011, 02:54 PM   #1
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Sigma 18-250mm HSM P-TTL compatibility?

I brought a K7 & Sigma 18-250 HSM last year from B&H and enjoy your great price & service as usual. A problem developed after I start using a Metz 58AF2 flash with above combination - overexposure in P-TTL. Both Pentax & Metz responded to my inquiry and determined that it is an issue with the Sigma lens. One reason is my DA lens work well with the Metz in P-TTL. Do you have any feedback from customer who has this combination (K7/58AF2/18-250HSM) encountering the overexposure problem? I posted my question on the Forum but it doesn't seems anyone here using my combination. Sigma US has not response to my inquiry after the initial reply. Appreciate any info from B&H.

01-19-2011, 07:07 AM   #2
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I do not have any insight as to why this may be happening. Sigma would be the one to speak to as they will know what compatibility issues their lenses have. - Contact Us

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