Leica SF 58 Service Manual download pdf (Page 65)

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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 LEICASF 58 supports high speed synchro-

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)

3. Choose the menu and

4. select -HSS or -HSS from the list.

MTTL

Mode

MTTL

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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Leica SF 58 Service Manual Page 65