Automatic Adjustment Of The Range Indication; Flash Synchronization; Automatic Flash Sync Speed Control - Leica SF 58 Instruction Manual

Automatic adjustment of the range indication

The cameras transmit the flash parameters (e.g. for ISO sensitivity, lens focal
length, aperture, and ambient light exposure compensation) to the flash unit.
As a result, the flash unit automatically adjusts its settings accordingly. The
maximum flash range is calculated on the basis of the flash parameters and
the guide number, and displayed on the monitor.
For this, data exchange must occur between the camera and flash unit, e.g. by
pressing the camera's shutter release button!

Flash synchronization

Automatic flash sync speed control

Depending on the camera model and the exposure mode set on the camera,
the shutter speed is switched to flash sync speed when readiness of flash is
reached (see camera instr.).
Shutter speeds faster than the flash sync speed cannot be set (except with the
TTL
flash modes -HSS and
p. 63) and/or are switched to the flash sync speed. In contrast, slower shutter
speeds than the flash sync speed can be used depending on the illumination
mode selected on the camera.
Notes:
• The LEICA R 9 operates with variable shutter speeds in program exposure
mode. They are automatically controlled by the camera depending on the
ambient light and focal length of the lens used (see camera instr.).
• If you want to ensure that the LEICA SF 58 can use its full light output, you
should not select shutter speeds faster than 1/125 s .
• Cameras or lenses with central shutters have no sync speed, since with these
lenses, any shutter speed can be also be used with flash. As a result, there is
no automatic setting of any shutter speed in this case.
52
M
-HSS, see "HSS high speed synchronization",