I tried to click it on the usual way but it didn't work. Do I need to buy a specific lens mount? The person who sold me the lens said it worked with his Canon A-1 but perhaps he had a lens mount with ...
I have a Soligor 450 mm lens with a 40 mm dia camera body end thread connection. I would like to try adapting it to a D90 AF system. Are there adapter rings available out there for this purpose?