keith_thomson

I purchased a Tochigi Nikon 300mm f2 on ebay and use it primarily for motion picture use. My lens had a Nikon f mount but I was able to get a PL mount from Japan for use with Arriflex motion picture cameras. I would like to find a Panavision mount but will probably have to have one made. I have used it with my film and digital still cameras as well. The Tochigi Nikon is the same glass as the origional but has redesigned mechanicals making it better suited for motion picture use. Very solid 3/8 support thread. The focusing is in the conventional direction instead of the Nikon (backwards to most). This makes the lens much more user friendly to camera assistants that have to focus the lens via measuring tape and eye focus. You can expect to pay well over 10K for one of these lenses as most converted 300mm f2's for movie use are 15 to 20K... Probably the most exceptional lens in this focal length out there.

As I do not have easy access to a camera tech at this time I would

like to change the focusing screen on my Pentax 67 myself. Are there

any special tools needed to accomplish this? If anyone could walk me

through this it would be appreciated. I understand there is a

potential collimation problem, but I would like to attempt it regardless.