I have a Leitz red-scale screw mount 50mm Elmar mounted in a Kilfit Rezar adapter for a 16mm Arri. I am debating on whether to keep the lens or sell. I'm dusting off my M3 but already have another nifty fifty, (Summicron). I've read the Elmars were/are stellar lenses. Is there a market for an Arri mount lens of this caliber? Thanks for any thoughts.