Contax-CY to Arri-LPL mount instructions
Our Leitax mount will work on all Contax C/Y  lenses variants made by Zeiss, and possibly on other brands lenses with the C/Y mount.

This one is a Narrow MM type mount.
Note the lug on the original mount.

MM-WideThe Wide MM lenses have a pin there.

Other Contax lenses have nothing there, no problem, just put the lens at this same position guided by the notch below.
This is what you receive from Leitax.
First, we put the steel plate on top of the original mount.
Evidently, the lug/pin will coincide with the cut-out on the Leitax mount.
Like this.
Now install the black ring.
Note the position of the small hole, like this the black ring will enter between the original mount wings.
And now we can rotate it until the small hole coincides with that slot .

See how convenient is to have the screwdriver magnetized. Just rub a magnet on it.
Time to put the small screw into the threaded hole.
Done, now the black ring cannot rotate.
Now see that the holes of the two rings don't coincide..
Rotate a bit the steel ring until they coincide.
And we can install the lens centering ring on top of the steel ring.
Now we need that the three holes coincide to use the included black screws.
Carefully, tighten the four black screws, alternatively bit each one until tight, but not too much.
I use only two fingers on the screwdriver to avoid doing too much force.
Ready, now our Contax lens can be used on the full frame Arri cameras.

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