Which manual focus legacy lenses, when used in REVERSE have the simplest manual diaphragm control. Without adaptors if possible. I must have had them all at one time or another during my photographic years, but I must admit I've forgotten. The Canon nFD I have, so I know about that one. TIA
Pentax and other M42 lenses with the manual stop down switch are probably the easiest. Olympus OM lenses have a depth of field preview button or lever on the side but it needs to be held. Fred
Thanks Fred. If memory serves, and it's not that good at 72. Did the old Nikkors AI & AIS aperture ring not control the diaphragm from fully open to stopped down without adaptors.
