Leica M2 User Manual download pdf (Page 13)

With vertical lines it is often easier to set the distance by the

split-

image method.

Here you watch the displaced section of the

vertical line in the rangefinder field. This section moves along the

horizon- tal boundaries of the field as you turn the lens, until the

image be- comes continuous down the whole finder area. At this

point the lens is set exactly to the correct distance.

The Optical Depth-of-Field Indicator in the Rangefinder

The rangefinder of your LEICA M 2 also enables you to check whether a subject in front of, or behind, the point

of sharpest focus will be acceptably sharp or not. For this you use the projections at the top and bottom edges

of the rangefinder field rectangle. These projections show the depth-of-field for a standard 50 mm lens, the

lower for the all-around aperture of f/5.6, the upper for f/16. After focusing on the subject of major importance

the appropriate projection is superimposed on other subjects before

and/or behind the point of focus. If the

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separation of the double image

outlines still lies within this

projection the image will

acceptably sharp. To use this

special device most effectively it

is advisable to test only the edges

of the foreground or background

subjects.

Object outside depth-of-field

The double image lies within the wide upper

mark: Object is still rendered sharp at f/16

Plane of sharp focus

The double image lies within the narrow lower

mark: Objects is still rendered sharp at f/5.6

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Leica M2 User Manual Page 13