Leica M 240 Instructions Manual page 71

Note:
If the automatically controlled or manually set shutter speed is
faster than / s, the flash is not fired unless the flash unit is
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HSS-compatible (see p. 196).
Flash exposure displays in the viewfinder with system-
compatible flash units
A flash-shaped LED appears in the viewfinder as confirmation and
to display the various operating conditions. This LED appears
together with the displays for exposure metering for the ambient
light level, described in the relevant sections.
In automatic flash mode
(flash unit set to GNC or TTL)
• does not appear despite the flash unit being switched on and
ready for use:
A faster shutter speed than
and the connected flash unit is not HSS-compatible. In such
cases the camera will not fire the flash unit even though it is
switched on and ready for use.
• flashes slowly (at 2Hz) before the picture is taken:
The flash unit is not yet ready to use
• is lit up before the picture is taken:
The flash unit is ready for use
/ s is set manually on the camera
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• remains continuously lit after taking the picture, and the other
displays go out:
The flash exposure was successful, the flash unit remains ready
for use.
• flashes rapidly after taking the picture (at 4Hz), and the other
displays go out:
The flash exposure was successful, but the flash unit is not yet
ready for further use.
• goes out after taking the picture, together with the other
displays:
Underexposure, perhaps due to the choice of too small an
aperture stop for the subject. If the flash unit is set to a partial
discharge power, because of the lower power requirement it may
be ready for use despite the flash LED not lighting up.
When the flash unit is set to camera control (A) or manual
mode (M)
• does not appear despite the flash unit being switched on and
ready for use:
An exposure time shorter than
the camera. In such cases the camera will not fire the flash unit
even though it is switched on and ready for use.
• flashes slowly (at 2Hz) before the picture is taken:
The flash unit is not yet ready for use.
• is lit up before the picture is taken:
The flash unit is ready for use.
/ s has been set manually on
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EN
195