Volker Hett , Mar 19, 2004; 04:50 a.m.
With a rangefinder you won't need Zone Focus. But.... without a ragefinder of sorts you have to guess distance and set the lens to that distance. With higher F-Stop and thus bigger DOF you can use the DOF markers on your lens to set the camera to a distance where your subject is in focus.
I usualy set my Rollei 35 to F8 and 3 meters which gives me reasonable sharp pictures from subjects roughly within 2 to 6 meters distance.