Sigma XQ Filtermatic 16mm 2.8 Fisheye

brofkand · 01-24-2012, 11:57 AM

Hi all,

I have a Sigma Filtermatic fisheye lens that is M42 mount. It actually came with an Asahi M42->K adapter installed. The problem is, I don't see a manual aperture control. How can I use this lens on my K-5 (or P30T for that matter) without keeping it wide open?

Thanks!

brofkand · 01-26-2012, 05:02 PM

I answered my own question; the lens has to be used wide open without modifying the coupling prong. I returned it back to the shop.

01-24-2012, 11:57 AM	#1
brofkand Pentaxian Join Date: May 2009 Location: North Carolina Posts: 836	Sigma XQ Filtermatic 16mm 2.8 Fisheye Hi all, I have a Sigma Filtermatic fisheye lens that is M42 mount. It actually came with an Asahi M42->K adapter installed. The problem is, I don't see a manual aperture control. How can I use this lens on my K-5 (or P30T for that matter) without keeping it wide open? Thanks!

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01-26-2012, 05:02 PM	#2
brofkand Pentaxian Join Date: May 2009 Location: North Carolina Posts: 836 Original Poster	I answered my own question; the lens has to be used wide open without modifying the coupling prong. I returned it back to the shop.