I checked, in fact, it's not a Durst one, I reused a flat mounting board from a Polish made enlarger lens (Janpol color from PZO factory, for the connoisseurs ;) ).
Originally Posted by octofish
As it's a 42 mm threaded, I used too a step down M42-M39 ring (a few buck from a russian dealer) to mount the Rodagon (or a Schneider componon), et voila !
A bit complicated, I know, but it is working well, as the PZO mounting board has exactly the same diameter as standard Meopta board.
Maybe a kind of East european standardization here :)
Please let me know if you want further explanations, I can even post a snapshot here.
I am told too that plan Meopta mounting boards once existed, I believe they are even sold by dealers like Fotoimpex, but it seems no longer available.
In all case, the suggestion from Martin to test before buying anything is good. I know it's working with an Opemus 6 like mine, but you should check too with the Opemus 5, if ever focus stroke is shorter for this model.
So I can confirm that a flat lens board is still not enough to get focus with a rodagon 2.8 on a meopta opemus 5. NEARLY. But not quite. I made one out of card and a retaining ring, and no joy.
So I guess I'll see if I can get a recessed one made up. Or sell the lens.
This is a very sad day.
I once had an Opemus 5 and now use an Opemus 6 for colour. I was wondering why they had increased the diameter of the concave/convex mounting plate between the models and this problem with the Rodagon, and 'fat' lenses in general, might be the reason.
Is the problem with the stop-down lever, or with the actual lens-body itself? I have no idea if your particular Rodagon has the pre-set aperture lever or not, but it could be the widest part - it could also be far enough away from the mounting ring that the width isn't a problem. Perhaps the stop-down lever can be removed, if that's the bit which is too wide.
It's the lens body itself. The part immediately after the screw thread where it goes out wide.
The thing I noticed is that it's also quite long compared to my meopta anaret-s. I'm wondering if this means it needs to go currespondingly further in the up direction to focus. This might make it even harder. It's really a matter of millimeters from getting focus with a flat board. If it was a touch shorter, I wonder if it would work.
Oh well. It doesn't!