And being a 50/1.4 Super-Tak, the lens is most likely yellow as well, looking through it, due to the glass.
Joe
This lens is NOT auto focus. It's an "auto lens" which means that the diaphragm operates automatically. They didn't always... The yellow is a reflection off the coating.
Regards, Bob... --------------------------- "No man's life, liberty or property is safe while the legislature is in session." -- Mark Twain
From: "Joe Wilensky" <[EMAIL PROTECTED]>
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=15240&item=3828707646&rd=1&ssPageName=WDVW
... and note how they had to remove part of the rear lens cap to accomodate the autofocus connections.
And of course that lens isn't yellow ... it's just the lighting!

