· Get a Cloudy Nights T-Shirt · Submit a Review / Article Click here if you are having trouble logging into the forums Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> Equipment Previous   Index   Next   Threaded   Pages: 1 azerrad15 newbie Reged: 06/01/12 Any way to adapt a Takahashi Mamiya 645 mount?       #5557670 - 12/06/12 02:44 PM Edit   Reply   Quote Quick Reply   Hello, just thought I would throw this out there. I've done some considerable googling on this to no avail. I have a Takahashi Mamiya mount and I would like to adapt it to use on a standard 2" tube. I realize that I would get some or perhaps a lot of vignetting on my Phase One back but would like to give it a shot as long as I don't have to tear up the mount adapter itself to try? The Tak Mamiya mount adapter is a standard Mamiya camera mount on one side but has male threads on the other side with a diameter of approx 71 or 72 mm. Not sure of the thread size. Any feedback would be greatly appreciated! Thanks... Post Extras:       TxStars Pooh-Bah Reged: 10/01/05 Loc: Lost In Space Re: Any way to adapt a Takahashi Mamiya 645 mount? [Re: azerrad15]       #5560345 - 12/08/12 02:19 AM Edit   Reply   Quote Quick Reply   The Mamiya 645 coupler for the FC/FS-100/125 has a 72mm thread. Precise Parts could make an adapter for you: http://www.preciseparts.com/ppmain/index.html Yes your image circle will be reduced to the smallest I.D. of your focusing system. Which scope are you trying to put it on? Post Extras:       azerrad15 newbie Reged: 06/01/12 Re: Any way to adapt a Takahashi Mamiya 645 mount? [Re: TxStars]       #5560571 - 12/08/12 09:33 AM Edit   Reply   Quote Quick Reply   Thanks for the reply. In this case it's a TV85. I have tested out the scenario by placing a simple Orion 2" draw tube against the inside of the 645 Tak adapter and snapping a few pics through the scope. It appears to work okay with a bit of vignetting. I considered cementing the draw tube to the adapter with JB Weld but that would basically ruin the adapter and the end goal is to mate it with a TSA-102 once funding permits. I like the idea of having these folks build a custom adapter. It would have to be a female 72mm Tak on one end to a 2" drawtube. I would think I would want it to be a few inches long so I could experiment with correct image plane distance by simply moving the tube in and out. I have not been able to locate anything with these basic requirements. Thanks for the tip, I'll give these guys a call and go from there, Post Extras:       piaras professor emeritus Reged: 01/26/09 Loc: Niagara Region Re: Any way to adapt a Takahashi Mamiya 645 mount? [Re: azerrad15]       #5564988 - 12/10/12 10:08 PM Attachment (7 downloads) Edit   Reply   Quote Quick Reply   Not to highjack your thread, but I built a Phase One digital back to Canon FD lens body to play with. I do like the idea of the MF lenses since the Pentax 67/645s are cheaper than current EOS lenses. Maybe it will be the next step. Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 12 registered and 18 anonymous users are browsing this forum. 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