Schneider-Krueznach 90mm 6.8 WHAT COPAL SIZE?

[Thomasbroening]

I just bought this lense for my linhof and not sure if it is a copal 0 or 00. Anbody have an idea? thanks thomas

[Chauncey Walden]

The Schneider vintage lens data site says it's a 0 and uses a 40.5mm filter.

[Rafael Garcia]

Mine is mounted on a Synchro Compur P, and the thread size is indeed 40.5mm.

[Thomasbroening]

Thanks for the help!