Mamiya 645 PRO TL Instructions Manual

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Mamiya 645 PRO TL Instructions Manual Manual pdf 26 page image

Depth of FieldReading the Depth of Field ScaleDepth of field is defined as the zoneof sharpness before and behind theplane of focus. It depends on camerasubject/distance, focal length of lens,aperture setting and distance the lensis focused at.~11 16 221 IIn addition to visual observation, theDepth of Field can be determined byusing the Depth of Field Scale oneach lens. f/stop numbers appear onboth the right and left side of the redindex mark in the center of the scalering. Simply read the figures whichappear above the f/stop numbers onthe distance scale of the lens.For example, with the 80mm f/2.8Nlens focused at 3m and the apertureset at f/22, the depth of field scaleindicates that the zone of sharp focuswill extend from about 2m to 6m.