Leica SUPER-VARIO-ELMAR-SL 1:3.5-4.5/16-35 ASPH Notice D'utilisation page 18

TAKING PHOTOGRAPHS WITH AUTOMATIC DISPOSURE SETTINGS AND
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MANUAL SETTINGS FOR SHUTTER SPEED AND APERTURE
The Leica Super-Vario-Elmar-SL 16-35 f/3.5-4.5 ASPH. features variable shutter speeds, which means
that the effective aperture opening will vary depending on the focal length setting. The aperture will
match the displayed value if the aperture value 3.5 is set at 16 mm. The actual aperture decreases for
longer focal lengths and at 35 mm we get to the second value of 4.5 this lens is named after. The light
metering function of the lens ensures that the correct light volume is measured for any exposure
mode. Make sure to specify the desired image section (by selecting the correct focal length) for the
later shot before you save the measured value or changing the timer/aperture combination to prevent
incorrect exposure.
The same applies for flash operation with a manual setting of the flash output or a computer-con-
trolled flash unit. In both cases, the aperture setting on the flash unit must match to the actual lens
aperture. Where a computerized flash unit and a TTL flash exposure controller is used, the actual
aperture setting is forwarded automatically and the right exposure will always be guaranteed.
LENS HOOD
The Leica Super-Vario-Elmar-SL 16-35 f/3.5-4.5 ASPH. comes with a lens hood matching the
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optical beam paths. The symmetrical bayonet is attached quickly and simply; it also fits backwards for
space-saving storage. With the lens cover removed, position it in such a way that one of the index
points on the lens hood matches the position of the index point on the front mount of the lens .
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Once aligned, twist the lens hood into position by turning it approx. 30° until you can hear and feel it
click into place. Keep the lens hood in place whenever you carry the camera ready for use. It protects
against contrast-reducing stray light and against damage and soiling of the front lens, e.g. from
accidental fingerprints.
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