Kodak portrait lens 12"

[cyrus]

Just got one of these - was wondering about placing a uv filter on the front ring in order to protect the diaphram which is exposed since the there's no front element.
Suggestions? Size?

[Jon Wilson]

You can purchase one of these adapter rings from sk grimes.
http://www.skgrimes.com/slipon/index.htm

[brook]

I just make sure the lens caps are on when when not in use. I dont use any UV filters to protect lenses, just treat them with respect.

[cyrus]

Yea, didn't get a lenscap...

[John Berry]

The threads on the front are series 9.

[Robert A. Zeichner]

I bought my 305mm Portrait lens from the late John Kausch, a portratist from Birmingham MI. He did a very clever thing by attaching a series 9 gel filter holder to the front and then sliding a 4x4 piece of foam core in the holder to protect the shutter/lens when not in use. I still use it that way and by doing so, can also use a bunch of gel filters I got from him as well. Just another approach