Mike Kennedy=I have reading glasses (that I'm always forgetting at home)and adjusting the dials on these cameras to achieve proper focus& exposure can be a chore.Thinking I might just "set-it-and-forget-it" shifting shutter speeds as necessary.How do you use your Russian RF?
Turning shutter speed dial all the way left you have B,then every right click or drop of it, means the higher number of shutter speed.Same can be said for f numbers if there are click stops. FEDs and JORKIs are build in diopter lever adjustment mechanism (not the earlier models of 1950).