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Forum: Lens Clubs
04-28-2017, 12:06 PM
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Shooting mirrorless precludes membership in this club.
Sorry, couldn't resist.
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Forum: Lens Clubs
01-11-2017, 05:54 PM
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Thanks for your thoughts on my problem. The lens' camera end is a female unthreaded bore with three set screws. I imagine the lens adapter has a groove that the three sets screws use to lock the lens longtitdunally while a larger single screw with a knurled knob is used to prevent rotation or allow spinning the camera between portrait and landscape modes.
I can probably guesstimate and prototype but was hoping there was someone with a copy of this lens to hand.
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Forum: Lens Clubs
01-11-2017, 11:38 AM
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Does anyone have or know where one is of this lens.
I have one but the part that couples to the camera appears to be missing.
There is a recess with three set screwsthat I believe receives something like a T-mount adapter. My understanding is that Sigma had a lens adapter system which was proprietary.
I would be looking for a photo or two of the adapter and a few measurements. Not necessarily Pentax as I will be using the lens with a Sony E mount that I have adapters for several systems.
If this Sigma mount is familiar to you and you have another lens that uses it the info would be just as welcome.
Thanks in advance
500 f8
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Forum: Lens Clubs
12-21-2016, 10:11 AM
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K10D prism housing interferes. You can use an extension tube at the price of infinity. Mirror less the way to go. Love to see some sample photos. Maybe I will get my copy up and running
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