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Old 31-05-2019, 07:44 PM
HenryNZ
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Join Date: Nov 2014
Location: Auckland, New Zealand
Posts: 57
My Samyang 135 f/2 lens for your Canon 6D

I have too many OTAs that I am not using, but I want an OSC camera. My ideal would be an ASI071 but I cannot afford it at the moment, so I have decided on a Canon 6D Mk 1 second hand.

I have a very good condition (optically and physically) Samyang 135 mm f/2 lens with EOS mount, with my own-design 3D-printed support frame. To allow autofocus, I have 3D printed a follow focus gear around the lens collar, which can be driven by a Rigel nStep stepper motor mounted on the support frame. The whole contraption can be mounted on a dovetail. This set up rigidly supports the lens and allows autofocus (or at the very least computer controlled focusing). I also have a 3D printed B-mask to suit the focal length and f/ratio of the lens. I have successfully use this setup with my crop size Canon DSLR to take wide field like the Rho Oph image here:

https://flic.kr/p/S1RscZ

Unfortunately this set up has not seen much use after that image as I also have a focal reduced Takahashi FS60CB of a little longer focal length.

I am willing to do a trade of this set up (lens, support frame, Rigel nStep motor, B-mask) for a Canon 6D with any differences in value made up in cash.

If you have a 6D and interested in a swap please let me know.
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Old 01-06-2019, 05:55 PM
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that_guy (Tony)
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Join Date: Dec 2009
Location: Charleville
Posts: 2,063
would you be willing to sell the lens?
 

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