Leica APO-VARIO-ELMARIT-SL 1:2.8-4/90-280 Notice D'utilisation page 19

DESIGN OF THE LEICA SL LENSES
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In principle, all Leica SL lenses have the same external design: on the front mount there is 2 an
external bayonet fitting 2a for the lens hood and an internal thread for filters, a setting ring for
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the distance and a fixed ring with a red index button for changing lenses . Furthermore, the Leica
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Vario-Elmarit-SL 1:2.8-4/90-280mm has an additional ring for setting the focal length and the
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appropriate index . In the bayonet flange there is a contact strip by means of which the entire data
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exchange between the camera and lens is effected, including the control commands for autofocus
and the aperture. Furthermore, the lens has a tripod mount with a removable tripod shoe .
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FOCUSING AND SETTING THE FOCAL LENGTH
The camera focuses automatically in autofocus mode; in manual mode turn the distance setting ring
on the front to focus . The speed at which you turn the ring determines how quickly the setting
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changes. In this way, you can make fine adjustments just precisely as you can quickly move from the
close-up to long-distance range. Please refer to the relevant sections in the camera instruction for
more details. The focal length - and thus the desired shot composition – is set with the rear ring 4 .
DEPTH OF FIELD
Since Leica SL lenses do not have an aperture ring, there is no depth of field scale. Instead, the
relevant front and rear limits of the depth of field can be read in the camera's cover display together
with the distance set.
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