Metering Memory-Lock - Leica M7 Bedienungsanleitung

The shutter speed calculated is displayed digitally
in the camera's viewfinder, in half steps to give a
better overview.
For shutter speeds of 2 s and slower, the re-
maining exposure time is counted down in the
display after the shutter is released. However, the
exposure time actually calculated and contin-
uously controlled can deviate from the half-step
value shown. If, for example, "1 1 6 6 " (as the nearest
value) is shown in the display before the shutter is
released, but the calculated exposure time is
longer, the countdown after release could also
start from "1 1 9 9 ".
Under extreme light conditions, after calculating
all the parameters, the exposure meter can arrive
at shutter speeds outside its working range, i.e.
brightness values, which would require exposures
shorter than 1/1000 s or longer than 32 s. In such
cases, the minimum or maximum shutter speed
mentioned is used and the value flashes as a
warning.

Metering memory-lock

It is often the case that, for composition reasons,
important parts of the subject should be off-
center and these important parts of the subject
are sometimes brighter or darker than average.
However, as described in the sections "Exposure
metering" on page 96 and "General information
on exposure metering" on page 106, the selective
metering of the LEICA M7 deals exclusively with
the center of the image and is calibrated to an
average grey.
The aperture priority mode provides an easy way
of dealing with this kind of subject and situation
with metering memory-lock.
To do this:
01. Focus the metering field on the important part
of the subject, in the first case, and on another
detail of average brightness in the second
case, by moving the camera (see also the
illustrations for aligning the metering field in
the viewfinder on pages 104/105),
02. and then press the shutter release button (8)
to its second pressure point to measure and
lock the value. As long as the pressure is
maintained, a red point appears in the view-
finder at the top of the numerical line as
confirmation and the speed value does not
change, even if the brightness conditions do so.
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