134
SELECTING THE SYNC SPEED /
THE SYNC SPEED RANGE
Whilst the shutter speed used has no bearing on
the control of the flash exposure (because the flash
duration is very much less than this), the reproduction
of the available light is very strongly influenced by the
shutter speed and by the aperture setting. A fixed
setting of the fastest possible shutter speed for flash
operation, the sync time, leads unnecessarily in many
situations to a greater or lesser underexposure of all
parts of the subject not directly lit by the flash.
The Leica M Monochrom allows you to combine flash
operation with the shutter speed generated in aperture
priority mode to subtly change the lighting conditions
for the relevant subject to suit your compositional
ideas. You can choose any of five ways of doing this:
1.
Lens dependent
Automatic control of the shutter speed depending
on the focal length used (based on rule of thumb for
blur-free pictures from the hand =
1
/
Focal length
, e.g.
1
/
60
s with the Summicron-M 50mm f/2) up to the
sync speed
1
/
180
s.
1
2. Off (1/180s)
Fixed setting at the fastest possible shutter speed
1
/
180
s, e.g. for the sharpest possible reproduction of
moving subjects and fill-in flash.
3.
down to 1/30s, 4. down to 1/8s and 5. down to 32s
Automatic control of all shutter speeds from the
specified value to the sync speed
1
/
180
s.
1
Only when using Leica M lenses with 6-bit coding in the bayonet and
with lens identification enabled in the menu (see p. 97/114/110
for details)
Note:
Manual exposure control also allows any shutter speed
up to the sync speed
1
/
180
s to be set.
Setting the function
1. In the main menu (see p. 97/110), select Auto Slow
Sync
(4.1.17) and
2. the desired option in the sub-menu.
