canon 21mm ??

[sp9107sp]

did Canon make a 21mm for the rangefinder system? I cannot find one in any of the books that i have, wondering why they made 21-28 viewfinder adapter?
http://cgi.ebay.com/ws/eBayISAPI.dll?VISuperSize&item=150558706321

 

[Phil_F_NM]

It's for one of the Canon motion picture cameras.

Phil Forrest

 

[JMQ]

Canon made a rangefinder-coupled 19mm f3.5 for their RF cameras. This has an external shoe-mounted viewfinder.