seeking advise from seniors who have owned/used this camera before. What kind of lens(modern) now is able to fit into this camera? What mount is it using? The lenses that I currently have are all stained with fungus, so i'm not sure if im able to buy or clean these old lenses. I don't even know if it works in the first place. The cocking mechanism is working, shutter is also working but I'm sure the interior is pretty dirty.Guess I need to make a trip down to specialise shop to have it checked.