James72Lightshow
All Photos-2329
Showing my modification of an Industar 69, the lip around the hilicoid was ground down with a Dremel, one pin was shortened to stop rubbing, the MFD(Minimum Focus Distance) pin was removed, and the other pin was replaced with a longer pin(IIRC) so that the two remaining pins hit at MFD and not continue till the helicoids separate.
This pic shows the common pin on the focus ring, the infinity pin @9:00, and the missing MFD pin @2:00, I don't remember what I exactly did to get the infinity pin and the common pin to contact at the new MFD position, I do remember they didn't touch, I don't remember if I swapped pins or found one that worked in my parts collection.
All Photos-2329
Showing my modification of an Industar 69, the lip around the hilicoid was ground down with a Dremel, one pin was shortened to stop rubbing, the MFD(Minimum Focus Distance) pin was removed, and the other pin was replaced with a longer pin(IIRC) so that the two remaining pins hit at MFD and not continue till the helicoids separate.
This pic shows the common pin on the focus ring, the infinity pin @9:00, and the missing MFD pin @2:00, I don't remember what I exactly did to get the infinity pin and the common pin to contact at the new MFD position, I do remember they didn't touch, I don't remember if I swapped pins or found one that worked in my parts collection.