Vivitar Lens

[Mr. William M Kane]

Hey gang,

   Putting together a bag for my ist D (this may be interesting to 
those with film & vivitar lenses), and was trying out various lenses.  
Trying to put on my Vivitar Series 1 90-180mm Flat Field, I found the 
flange at the back of the lens to be too long.

   I know someone had cut this flange down, but don't remember who, and 
don't remember their description/web page on doing it.  Can anyone give 
me a hand here?

IL Bill