IMPORTANT NOTE

PLEASE READ

I made well more then two dozens of famous Canon f:0.95 lens conversions over the years. My friend and colleague did about same. We never had a problem with it. Except ONE TIME. Pictures happen to be out of focus.

And it was not conversion fault.

Here is some technical info about conversion:

Leica and other "M" mount cameras have recessed lens mount surface by about 0.96mm comparing to old screw mount cameras. That is why screw mount adapters have 0.96mm thick ring between lens and camera mount surface.

Same applies to Canon 7 camera and obviously to Canon f:0.95 lens. The only difference is that screw mount adapter can not be screw on the Canon lens, but has to be mounted. Which requires some machining, drilling, treading and such. And that’s what I do.

Plus Rangefinder coupling for Canon TV lenses.

As you see on the picture below, Canon lens has two major part assemblies. Mount and focusing part, and actual lens barrel optical part, which contains all the glass elements.

During conversion, lens is separated in to two parts and work only done on Mount part. Then lens reassembled and ready to use. No tuning required for focal distance: Lens - Film plane. About same as you if put screw mount adapter on older screw mount lens and use it on “M” mount camera.

But that is only true, if lens was not tampered with before.

If pictures are out of focus, while Rangefinder coupling is correct, there could be only two reasons.

First: the yellow ring, I call it “tuning washer”, which located between “optical part” and “mount part”, is for some reason wrong thickness. It used by manufacturer to final fine tune working distance between optical part and film plane.

Second: somebody disassembled optical part for some reason, like cleaning, and reassembled with some mistakes.

I can not check for this misalignment before lens is converted. Only after conversion it can checked on the camera with ground glass. The best way is to check it with “Collimator” or with film. I do not have “Collimator” And I don’t have working Leica camera to check it with film.

In any case, if by very rare chance, your lens have a problem, described above, it has to be done by professional technician who has required equipment. I can’t fix it because, like I said before, I don’t have equipment for it.

When you order conversion job from me, it will be done, as usual, with professional care,