Depth of Field
Depth of Field Scale
Instantly calculates both your working aperture and the exact point of focus.
Using Your Depth of Field Scale is that Easy
After setting any swings and tilts, focus on the farthest point you want to keep in focus.
Set the depth of field scale to the zero point by lining up the arrow on the scale with the white dot on the camera. Turn the scale only, not the focusing knob.
Focus on the nearest point you want to keep in focus, using only the fine focusing drive on the rear standard.
Set your aperture to the f/stop indicated on the depth of field scale.
Turn the rear focus knob back until the depth scale reads half your working f/stop (for example, from f/22 you would turn back to f/11). You are now focused at the optimum point for that depth of field.