Adopting RF module from broken Kiev for folder camera.

[svetoklik]

Is it possible to adjust RF module from Kiev to have it coupled on to some folder camera?
Kiev has RF base of 7cm and there is difference among lenses with their bases.
It will be of interest to have explanation.

 

[OAPOli]

I have done this with a Zorki 6 and Canon 7. The RF unit is in a single piece and it was possible to adapt it on a DIY camera. I had to make a base plus cover with windows.

I think the Kiev RF is in multiple piece. You could maybe recycle the entire top plate.

For adapting to another lens, you can modify the cam follower. That's the piece that contacts the lens and pivots the mirror. It has to be longer or shorter for longer or shorter lenses. You can also make a cam on the lens or change the RF base length to change the coupling.

 

[svetoklik]

The helicoide on the lenses is long and quite non linear. It has much longer walk between 3 meters to 1 meter compared to the walk from 3 meters to infinity, but it is worth to build and tweak . Do you have some photos of it?

 

[OAPOli]

The helicoide on the lenses is long and quite non linear. It has much longer walk between 3 meters to 1 meter compared to the walk from 3 meters to infinity, but it is worth to build and tweak . Do you have some photos of it?

That's normal.

I think the Kiev expects a 50mm lens (actually closer to 52mm) which moves 3mm from inf to 1m. If you want to use the RF on a 75mm lens with movement of about 6.6mm and the cam follower is 10mm long, then it has to be lenghtened to 10*6.6/3=22mm.

 

[svetoklik]

I have seen your work, very nice, clean and with the design that will put shame on many modern cameras.
I am in, thinking now how to use traveling element inside camera for coupling with RF unit.