Originally Posted by Smitty
Have never used a Nikon Rangefinder..
Well there is the answer
you buy a Nikon rangefinder so you can change the aperture- simple
I stick a finger across the focus ring to "lock' it with one hand and change aperture with the other sometimes but usually if I am up or down a stop the speed is easier and the finger only works if on strap and the camera is braced against the body, film latitude is a wonderful thing. ( I suppose next post is admitting the Leica is a dig**al
BTW I have loosened front elements using the hood to change aperture, I avoid that trick.