Vickko
Veteran
Sounds like the thread that hold the rear half of the optical head to the focusing mount are tight. You may need to get some solvent into the thread and allow it to soak, and hopefully loosen the threads.
I personally don't like using the aperture ring to loosen a tight optical head. The screws that are used are small and aren't supposed to take a lot of force.
I personally don't like using the aperture ring to loosen a tight optical head. The screws that are used are small and aren't supposed to take a lot of force.
There are from lens mount to filter ring:
1) Three flat head screws screwed through the lens mount (screw head sitting between camera and and lens). I had these remained untouched so far.
***** these hold a tab that prevents the lens front from turning. You do not need to remove these to remove the lens optical head.
2) Two short thread flat head screws in the focus ring (only there, to cover the access holes for a pin, to lock the focus mount for disassembly). I removed these.
***** these cover the hole, for the pin to lock the focus mount.
3) Three grub screws in the focus ring further towards the front of the lens (fixing the focus mount assembly to the main barrel). I removed these, so the focus mount can turn freely towards the optical cell, which in turn is still screwed fixed into the inner sleeve of the focus mount).
***** these hold the optical head and prevent it from rotating when you turn the focus ring. I think you need to remove these to remove the optical head
4) 2 + 1 screws in the aperture ring - one of them with big head, holding the spring and ball for the aperture clicks, two of them with longer pin, to key into the aperture mechanism. I removed all of them - the aperture ring moves freely on it's thread (but can't be removed without getting the whole optical cell out first, as it unscrews from it's thread towards the rear of the lens).
***** these turn the aperture adjustment ring. You don't need to remove these to take out the optical head.
Do you mean the three flat head screws, that are in the lens mount (I have a 1956 LTM version of the Summarit)?
**** My lens is an LTM too. I referred to the three grub screws, but you have already removed them.