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New design for Samyang 135mm with EAF support

Samyang 135mm F2.0 ED UMC ZWO EAF 3D Printing DIY
2 replies•254 views
Nicolas Godingen avatar
Nicolas Godingen avatar
Hi,

I had a samyang at home for a while, at the time I was using it I was doing focus with a bahtinov mask, decided to put it again in service and fit on it an EAF, so I did a design for a full set that can be 3D printed with a support for the EAF and the possibility to fit 2 vixen rails on it.

here it is, feel free to comment.

Alex Nicholas avatar
Alex Nicholas avatar
I'd say that geared focuser is going to be way too high a ratio to be accurate enough for f/2, id go to using a gt2 pulley and belt personally so that maybe one full turn of the eaf motor achieves about 1/32 of a turn of the af ring. That's just me. 

Otherwise it looks good!!
Concise
Coolhandjo avatar
Coolhandjo avatar
Thats great. You can order these  on ETSY already built.  I have one installed but yet to use it.