CV Nokton Classic 1.4/35 focus adjustment?

[ampguy]

good idea Brian

good idea Brian

The other way to ensure your RF photos are spot on, would be some way to attach a tripod collar onto an RF lens.

Then you could focus it with a live view body, then when focused perfectly, remove the live view body and attach the legacy back and take the shot.

One could certainly design an RF lens where the focus-shift is accommodated by linking the aperture ring to the RF Cam. Put a Cam on the Aperture ring that translates the change in focus to the RF cam. Zoom lenses have more complex cams. I am not aware of any RF lens ever made that incorporates such a mechanism, but certainly would not be too hard to do. Aperture ring would probably be near the rear of the lens, like on an SLR.

 

[Japan---Exposures]

I have done more checking and someone advised to look at infinity, which is also off so I returned the lens and will start looking for a 35 Lux instead. I am not sure whether this lens is worth pursuing to find a good copy of. It's great in theory, but with all the stories out there I am not sure if I want to bother.

I used another 35 to shoot afterwards and you could see on the screen already that the focus was on. I take certain things for granted and it is very distracting if something doesn't work as you expect it. It takes your mind off what you'e taking pictures of.

Thanks for all the advice.


CV35 2 by Dirk | JapanExposures.com, on Flickr

 

[Japan---Exposures]

Thank you for the advice. Yes, I'd have to hunt around, check for a good copy, perhaps more than once etc. Yes, if it all works it might even be bargain, good-value performance lens. But then, I am not a student or similar anymore, with time and effort to put into something like this. I'd have to buy abroad and that would be a terrible back and forth, so I think I have to give up on this lens.

 

[tj01]

Dirk, if you take the rear element off ((1) by hand - grabbing the two baffles) you get access to a span ring (2). You take this off, and the lens comes into pieces:

The screws (5) can be used for fine RF coupling adjustment. You can also shim it differently, of course (4).

From your pic, it seems to me your lens is off also at f1.4. So I would try a wide open, infinity adjustment first. That's most likely what's wrong.

Roland.

Sorry to dig out this old thread. But where do you add the shim ?