The adapter is called a "leica nipple", I think Adorama has them, maybe MPex. . The short adapter is a Gepe Pro release wide angle cable release extension, ka12010. I bought mine at MPex, $19.95 plus shipping. This is a must have for WA lenses in recessed

http://www.mpex.com/browse.cfm/4,2223.html
http://cgi.ebay.com/1-Vintage-Cable-...item2565b30956