Leitz TELE-Elmar 135/4 on EOS

I'm going to convert Leitz TELE-Elmar 135/4 onto Canon EOS digital imaging format and now considering about the barrel construction to be modified. Minolta MD ROKKOR 135/3,5 helicoid mechanism construction would be utilized for the purpose. Mounting TELE-Elmar lens head on Minolta is not always easy as usual, difficulty in fitting firmly on it exist. In addition, reduction of the barrel weight is one of the requirement, original unnecessary connecting part would be deserted shown in the picture. Trial fitting proved that infinity lens element position would be established without any physical reason. Tele-Photo design that is shorter than 135mm resulted in the lens element positioning posterior than another conventional designed ones like Elmar 135/4 or Hektor 135/4,5. As a matter of fact, original Minolta iris constructive mechanism should be removed thoroughly and only a Minolta original helicoid construction would be play a part of modified Elmar 135/4. The Elmar 135/4 iris construction that is ideal round shape existing anterior position just behind the hood would would not cause any inconvenience when used actually. The problem on the dust sealing cover helicoid has been standing on the way, now I have found out a good solution. Now I'm making desperate efforts on this modification dreaming a good results.
There would be no argument to discuss on an inconvenience to use 135mm lenses on Leica M body with a smallest bright frame without checking out focusing scenery, in addition, 135mm on APS-C image plays a part of 200mm pure telephoto lens. Elmar 135/4 is Carl Zeiss Ernostar design, former Sonnar production, and the character is vivid and strong but fine lines resolution, my friend who is a former director of Nara Cultural Museum curator uses this lens as one of a device for recording cultural heritage. He must regard this lens as the most suitable for accurate portrayals. At a former period of silver salt film, there were several problems to obtain good pictures, now we come to getting into digital age, so we can enjoy the potentials of old designed lenses on earth!