Hss-High Speed Synchronization - Leica SF 58 Notice D'utilisation

HSS-High Speed Synchronization

Some cameras support HSS-High Speed Synchronization (see camera instr.).
This flash mode allows using a flash unit even with shutter speeds faster than
the sync speed.
The mode is helpful, for example in the case of portrait shots when a wide
open aperture (e.g. F/2.0) is to be used in spite of very bright ambient light in
order to limit the depth of field! The LEICA SF 58 supports high speed synchro-
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nization in -HSS and -HSS modes.
For physical reasons, HSS-High Speed Synchronization significantly reduces
the guide number and as a result also the range of the flash unit! This also
depends on the shutter speed used – the faster the shutter speed, the lower the
guide number! Therefore, always pay attention to the range indication on the
monitor of the flash unit
HSS-High Speed Synchronization is activated automatically if a shutter speed
faster than the flash sync speed is manually set or automatically adjusted on
the camera.
Setting the function on the flash unit (see also "Menu navigation / setting
the functions", p. 46, and "Flash modes", p. 56)
Mode
3. Choose the menu and
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4. select -HSS or -HSS from the list.
Settings on the camera
See operating instructions of the camera.
Displays on the monitor of the flash unit/ in the viewfinder of the
camera (see also "Displays on the monitor", p. 45)
– The range (2.5) on the monitor of the flash unit is indicated according to the
flash parameters transmitted by the camera or manually entered on the flash
unit (see "Automatic / manual setting of flash exposure parameters", p. 54).
– Flash readiness and the results of a flash exposure are indicated in the view-
finders of all Leica cameras listed excluding the LEICA MP.
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