Long-Term Exposure; Fixed Shutter Speeds; B Function; Exposure Control - Leica SL2-S Instruction Manual

LONG-TERM EXPOSURE

FIXED SHUTTER SPEEDS

In the modes S and M, the Leica SL2-S allows shutter speeds up to
30 minutes. The remaining exposure time after shutter release is
counted down in seconds on the display for shutter speeds greater
than 1 s.

B FUNCTION

Using the Bulb setting in M mode will leave the shutter open as long
as the shutter button remains pressed (max. 30 min; depending on
ISO setting).
Select the operating mode M (see p. 132)
▸
▸ Turn the front setting wheel in clockwise direction until is
B B
displayed as the shutter speed
136 PHOTOGRAPHY ▸ EXPOSURE
Notes
• Image noise becomes more apparent when using higher sensitivi-
ties, particularly on uniform dark areas. Long exposure times may
cause severe image noise. In order to reduce this annoying phe-
nomenon, the camera will take a second "black picture" (taken
with the shutter closed) automatically after a shooting with slow
shutter speed and high ISO value. The noise metered in this par-
allel picture is then digitally "subtracted" from the data for the ac-
tual picture. In such cases the message
Noise reduction in progress Noise reduction in progress
will appear with a relevant time value. The doubling of the "expo-
sure" time must be taken into account for long-term exposure
times. The camera must not be switched off during that time.
• The maximum selectable shutter speed depends, among other
things, on the setting of the menu item , see p. 130.
Shutter Type Shutter Type

EXPOSURE CONTROL

EXPOSURE PREVIEW

The brightness of the screen image mirrors the effects of the selected
exposure settings when pressing and holding the shutter button on
the first pressure point. You can now assess and control the effect of
the relevant exposure setting on the image before taking the picture.
This will apply as long as the subject brightness and the set exposure
don't result in excessively low or high brightness values.
This function can be disabled for the manual exposure setting (M).
Factory setting:
P-A-S-M P-A-S-M
▸ Select in the main menu
Live View Settings Live View Settings
▸ Select
Exposure Preview Exposure Preview
▸ Select (only in automatic, aperture priority and shutter
P-A-S P-A-S
speed priority mode) or (also for manual setting)
P-A-S-M P-A-S-M
Notes
• Depending on ambient lighting conditions, the brightness of the
screen image may differ from that of the actual pictures, despite
the settings described above. The screen image will appear con-
siderably darker than the – correctly exposed – picture. That is
particularly the case in long-term exposures.
• The exposure preview will also be displayed if exposure metering
is done via another control element (e.g. using the joystick, pro-
vided is was assigned the function).
AE-L AE-L

EXPOSURE LOCK

We often want to arrange important subject elements outside the
center of the picture for reasons of picture composition and these
elements may sometimes be very bright or very dark. Center-weight-
ed metering and spot metering, however, mainly capture an area in
the center of the image and are calibrated to an average gray scale
value.
In that case the metering memory lock initially allows a metering
of the main object and to store the relevant settings until the final
image section is set. The same applies for focusing (AF-L) in any
autofocus mode.
Usually both lock functions (focusing and exposure) are done at the
same time with the shutter button. You can, however, divide the lock
functions between the shutter button and the joystick or assign both
to the joystick. The functions include settings and storage.
PHOTOGRAPHY ▸ EXPOSURE 137