So I had TWO I-61L/D's. Now one is adjusted for the Leica,
http://www.rangefinderforum.com/forums/showthread.php?t=91163
and this is how to make one for your Contax, Kiev, or Nikon RF.
Tools and Parts required for the Job. The Contax mount is from a Zeiss 5cm F2 converted to LTM, using a J-8 in LTM. The J-8 optics module will not fit into the Sonnar shell. But- the I61 has the same thread, correct back-focus, and will fit perfectly.
http://www.rangefinderforum.com/forums/showthread.php?t=91163
and this is how to make one for your Contax, Kiev, or Nikon RF.
Tools and Parts required for the Job. The Contax mount is from a Zeiss 5cm F2 converted to LTM, using a J-8 in LTM. The J-8 optics module will not fit into the Sonnar shell. But- the I61 has the same thread, correct back-focus, and will fit perfectly.
The aperture ring must be filed down so that the optics module can be screwed in far enough to the mount.
The retaining ring must come off. I use needle nosed pliers, a thin screwdriver will work.
Slide the retaining ring off.
The Ball-Bearing is under the aperture ring. It falls out, I use some tape to trap it.
The retaining ring must come off. I use needle nosed pliers, a thin screwdriver will work.
Slide the retaining ring off.
The Ball-Bearing is under the aperture ring. It falls out, I use some tape to trap it.
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The aperture ring has a rim around it- which must be filed down. It needs to be almost flush.
It is a soft aluminum, and files down easily.
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Getting ready for re-assemble.
Getting the aperture ring back on: this screw will line up with the hole in the ring. Easiest to set the aperture wide-open, then line up for F2.
Slip the retainign ring back on.
Getting the aperture ring back on: this screw will line up with the hole in the ring. Easiest to set the aperture wide-open, then line up for F2.
Slip the retainign ring back on.
You will need to use your camera to set the lens to agree with the viewfinder. I use a negative strip with scotch tape over it, and a loupe when working with the camera.
I get to cheat- use an adapter with the TTL viewer. When I want a Nikon RF lens, I set the lens to agree with the 5cm F1.4. When I want a Contax lens, I set it to agree with a Sonnar.
I get to cheat- use an adapter with the TTL viewer. When I want a Nikon RF lens, I set the lens to agree with the 5cm F1.4. When I want a Contax lens, I set it to agree with a Sonnar.
Final step: I use some epoxy to set the lens in the mount. You could mark the position of the lens, and make a shim. Better, but takes a lot of time. These are not expensive lenses, and this method "just works".
W
wlewisiii
Guest
Great to see that optics module get used again.
Thanks for the excellent information - I see my problem was in not realizing that I needed to file down the aperture ring. No wonder it wouldn't go in far enough! :bang:
William
Thanks for the excellent information - I see my problem was in not realizing that I needed to file down the aperture ring. No wonder it wouldn't go in far enough! :bang:
William
I call it the "Best Stupid Look Method"...
"It ain't goin in farnuff.. Filetime."
"It ain't goin in farnuff.. Filetime."
W
wlewisiii
Guest
William