As part of the remedy for my latest attack of G.A.S. I bought a compendium shade on the auction site.
It arrived today and I scampered to my camera bag to attach it so I could sit back and admire it. It falls off. Damn!
Turns out the inside diameter is .115 in. larger than the outside diameter of my 90mm (non C) lens.
What is the reason for this discrepancy? Does the O.D. of RB lenses vary? Are there different shades?
I own a lathe and I can easily make a split ring to solve the problem but I really hope I dont' have to make a bunch of different rings as I acquire more lenses.
Does anyone have more info?