carl zeiss p-planar 90mm f2.5 projection lens, need info..

[hoanpham]

Just got a carl zeiss p-planar 90 2.5 projection lens.
It sits on a leica slide projector with missing parts.
How can i make use of it?

Thank you.

[Attila]

hold before nex and see where it is sharp, if you are lucky distance is enough to put on any nex adapter and fix with tape , focus by feets and done. If okay you can start to think about aperture , focusing etc a permanent solution. Cut from cardboard rings with different guessed aperture, like to F4 , F8 , put on rear part and you will see also how lens perform stopped down, I think lens will be outstanding even wide open.

[paulhofseth]

One use is to project slides which the P-prefix indicates that it is optimized for; flat field and maybe between 1:50 and 1;100 scale magnification would seem to fit home sceens and white walls.

I use mine instead of the standard 90mm (first version) it seems to perform better. The C -90 has a little (not normally visible ) colouyr fringing.

Since the Leitz version is similar to the elmarit 90, I presume this planar can be used the same way for making pictures.

p-

[hoanpham]

Thanks Attila and Paul.
Any idea how to convert it ?

[Attila]

[Tedat]

any pictures of this lens? Could help to figure out how it can be converted/mounted

[hoanpham]

Thanks for all replies.

The lens is still inside the slide projector.
I managed to power up, changed lamp, mechanism seems ok, very dusty. AF seems to work.
So if it's working, I may not unmount the lens.

It's a beautiful piece of glass.