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Mounting Meopta projection lens using a donor barrel
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PostPosted: Fri Apr 03, 2015 9:36 am    Post subject: Mounting Meopta projection lens using a donor barrel Reply with quote
Read about interesting adapter, for mount huge projection lenses to helicoid. But if you have not a such special helicoid, chipper solution is to buy broken mirror lens for donnor and use it barrel.
I make such construction for Meopta lens diameter of 64,5mm.

Here is my experience http://lensbeam.com/meopta-meostigmat/



Last edited by ink81 on Sat Apr 04, 2015 10:09 am; edited 7 times in total


PostPosted: Fri Apr 03, 2015 10:46 pm    Post subject: Re: Meopta Projection lenses on new Rafcamera 52.5mm adapter Reply with quote
ink81 wrote:
Interesting adaptor. But if you have not a helicoid, chipper solution is to buy broken mirror lens for helicoid donnor.
I make such construction for Meopta lens diameter of 64,5mm.

Here is my experience http://lensbeam.com/meopta-meostigmat/

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Interesting work! requires a certain level knuckles busting but I'm sure it works fine. I actually might try this.


PostPosted: Fri Apr 03, 2015 10:49 pm    Post subject: Reply with quote
I split this into a new posting, as this way of mounting might be interesting to others.


PostPosted: Sat Apr 04, 2015 12:02 am    Post subject: Reply with quote
The cheap mirror lenses usually have a very quick, short throw, helicoid. Is it enough ? iIf it is, then that's a great solution.


PostPosted: Sat Apr 04, 2015 9:13 am    Post subject: Reply with quote
No, the opposite, as DOF is very shallow, so a longer throw is actually much better.


PostPosted: Sat Apr 04, 2015 9:27 am    Post subject: Reply with quote
I have recently done a conversion using a broken camera parts, a hanimax 135mm was the donor and i put in a 16KP 50mm 1.2.
I wrapped tape around the lens til it was a snug fit in the helicoid. Fits well and is one of my faves at the moment.
Infinity too on E-PL5, not that its good for that. Smile



PostPosted: Mon Apr 13, 2015 7:07 am    Post subject: Reply with quote
Hi all,
I'm new here (like a user, not a observer) so please forgive all mistakes if made.
Is this solution (old lens donor barrel) will provide focus ability for meopta lens? Or is it just lens holder for specific mount ?

Regards
T.


PostPosted: Mon Apr 13, 2015 7:13 am    Post subject: Reply with quote
tester wrote:
Hi all,
I'm new here (like a user, not a observer) so please forgive all mistakes if made.
Is this solution (old lens donor barrel) will provide focus ability for meopta lens? Or is it just lens holder for specific mount ?

Regards
T.


Yes, it provides focusing well. Infinity also safe (for this lens).


PostPosted: Mon Apr 13, 2015 7:15 am    Post subject: Reply with quote
Good to hear that, thanks for prompt reply Smile
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