F35: DIY passive EF mount

[gaal]

Hello everyone,
I started to develop a passive EF mount for the F35. It is only a prototype for the moment, but the idea is to make an adapter cheap and reproducible by all. It is simply an old mount recovered from an old Canon then fixed on a support made in 3d. The prototype is in P.E.T but I will test a carbon version. It allows the focusing to infinity, I still have to model the front plate and add a system that blocks the lens.


here is a small example with a 16mm rokinon

 

[Clermond]

with due respect but does that make sense when most of EF lenses need electronic control for aperture?

 

[gaal]

I am trying to solve this problem with the addition of an arduino which will be integrated into the front plate. programming is not a problem, the concern being the resistance of the materials and the small space left because of the shape of the sensor block

 

[RayZan]

Brilliant!!
Is this supposed to replace the PL mount or the Nikon mount (with the Nikon camera face plate)? If to replace the PL mount: The EF mount is a good 8mm shallower that a PL mount. That means the lens would have to be literally inside the camera body and you might not have access to the aperture ring for some lenses.
Curious to see how you made it work.

 

[yachacha]

Looks like it screws directly to the CCD block. I believe the idea is a whole new front plate? Very cool.

 

[gaal]

yes that's it, it is a way to solve the problem of the EF lens which fits too much in the camera ( and then I don't have a spare front plate )

 

[RayZan]

So the original face plate is not needed for normal operation? How about the EVF socket?

 

[yachacha]

Why not cut out of the front of the normal F35 plate. The F35 Front Plate Swap is incredibly fragile operation, using your 4 screws, it would just be Nikon, Canon or PL switchable from the front.

Maybe slightly weaker than the original design which spread the lens weight across the entire front of the camera however Rokinon primes are a lot lighter than PL zoom lens. Use a lens support if you go with a big lens F35 standard PL or modified anyway.