Konica Hexanon 45mm/1.8 on SONY E-mout

The most difficult attempt was performed, transplantation, Konica Hexanon 45mm/1.8 on Auto Flash Electron onto SONY E-mount. Ancient Range Finder camera produced over 60 years ago, the donor is.
The lens helicoid inner barrel diameter meets with E-mount tightly meaning an impossibilty physically, some enthusiast dares cutting off the helicoid length to obtain infinity lens position.
As for my modification, no cutting of the innate length of helicoid in order to keep the shortest position for close up shooting. Thanks to this arrangement not to be changed the helicoid, 12.8mm barrel extension from infinity position makes 30cm close up shooting possible. Though distorted iris shape caused by electrically controlled iris construction might affect on the picture quality, my anxiety was in vain. The character of Hexanon lens at those period of time is fully acceptable for me, no problem at all. This lens will be kept at my hand so long as I am in this world.