Bedienungsanleitung Leica S (Seite 57 von 78) (Englisch)

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SETTINGS FOR CAMERA-CONTROLLED

AUTOMATIC FLASH MODE

Once the ﬂash unit you are using has been turned on and set to the

appropriate mode for TTL operation, on the Leica S

1. the exposure metering must ﬁrst be performed by gently pressing the

shutter release button before taking each ﬂash picture, so that the dis-

play in the viewﬁnder shows the shutter speed or switches over to the

light balance. If this stage is missed out by fully depressing the shutter

release button in one quick movement, the ﬂash unit will not ﬁre even

if required.

2. set the preferred exposure mode or the desired shutter speed and/

or aperture. The faster ﬂash sync speed must be taken into account as

this determines whether a "normal" ﬂash is ﬁred or an HSS ﬂash.

TTL FLASH MODE .

Fully automatic, i.e. camera controlled, TTL ﬂash operation is available

with the Leica S when using system-compatible ﬂash units (see p. 52),

and in all of the camera's exposure modes.

Automatic illumination control is also provided. This means that in order

to ensure a balanced relationship between ﬂash and available light at all

times, the ﬂash power is reduced by up to 12/3 EV as ambient brightness

increases (ﬁll-in ﬂash). However, if the available brightness requires a

faster shutter speed than the set sync speed (1/125 s for the focal plane

shutter, 1/1000 s for lenses with central shutter) or it is set manually, the

camera will automatically switch a system-compatible ﬂash unit to linear

ﬂash mode (HSS, see next section).

In addition, the Leica S transfers the set sensitivity and aperture to the

ﬂash unit. Provided it has the right displays, the ﬂash unit can then auto-

matically adjust its displayed range accordingly.

Notes:

• The settings and functions described in the following sections relate

exclusively to ﬂash units that are system compatible to the Leica S.

• An exposure compensation set on the camera (see p. 39) only inﬂu-

ences the measurement of available light.

If you want to simultaneously use compensation of the TTL ﬂash expo-

sure measurement in ﬂash mode – in parallel or in the opposite direc-

tion, you must make this additional setting (on the ﬂash unit).

• More details of ﬂash use, in particular for other ﬂash units not specially

adapted to the Leica S and for different ﬂash modes can be found in the

respective instructions.

HIGH SPEED SYNC MODE

Fully automatic, i.e. camera controlled ﬂash operation is available with

the Leica S when using system-compatible ﬂash units (see p. 52), with all

shutter speeds and in all of the camera's exposure modes. It is automati-

cally activated by the camera if the selected or calculated shutter speed

is faster than the sync speed, i.e. ≤ 1/180 s for the focal plane shutter. If

the ﬂash unit is set correctly, this change does not require any further

action by the photographer.

STROBE FLASH MODE WITH SYSTEM COMPATIBLE FLASH

UNITS

This ﬂash method, in which several ﬂashes are emitted in succession dur-

ing an exposure, is possible in all of the camera's exposure modes.

In and modes, the camera automatically sets the necessary shut-

ter speed for the selected ﬂash number and frequency. If the required

shutter speed results in overexposure due to the available light, this is

indicated by the light balance (2.6b).

In and modes, an excessively fast shutter speed is indicated by the

shutter speed display ﬂashing (2.2a/3.12) in the viewﬁnder and in the

top panel display.

In such cases, exposure compensation can be carried out by changing

the number of ﬂashes and/or the ﬂash frequency and/or the aperture

and/or the shutter speed (with and ).

For a successful strobe photograph, for example when several phases of

one sequence of movement are recorded on one picture, the operating

range of the ﬂash unit, the number of ﬂashes, the distance and of course

the aperture are of crucial importance. You can ﬁnd information about

this in the instructions for your ﬂash unit.

Note:

The HSS ﬂash mode results in shorter ranges.

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