>>4469498Don't know if anyone gives a damn but it turned out someone has already been inside here. I unscrewed the latch mechanism from the adaptor only to find that it had been glued on at some point. I'm guessing there should be a return spring or something in the latch casing which has since been lost, without which the latch just flops in place instead of returning to position. The dumbass who did this had evidently realised this was a problem for keeping the adaptor securely fixed to the lens and had glued the latch and the adaptor to the lens. Fucking boomers, man.
I've ordered an E-FD adaptor from Amazon that arrives on Tuesday. Mildly excited to try out this lens and its fat Vivitar 90-230 cousin later this week. Will they be any good or will the previous owner have managed to fuck them up in other weird wonderful ways? Who knows.