Leica SE Instruções de Operação descarregar pdf (Página 57)

SETTINGS FOR CAMERA-CONTROLLED

AUTOMATIC FLASH MODE

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

ate 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 display

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 1

EV as ambient brightness increases

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

speed than the set sync speed (

125

s for the focal plane shutter,

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 automatically

adjust its displayed range accordingly.

Notes:

• The settings and functions described in the following sections relate exclu-

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

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

the measurement of available light.

If you want to simultaneously use compensation of the TTL ﬂash exposure

measurement in ﬂash mode – in parallel or in the opposite direction, you

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

• More details of ash use, in particular for other ash 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 automatically activat-

ed by the camera if the selected or calculated shutter speed is faster than the

sync speed, i.e. ≤

180

s for the focal plane shutter. If the ﬂash unit is set cor-

rectly, 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 during

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

and modes, the camera automatically sets the necessary shutter

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).

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

ter 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 instruc-

tions for your ﬂash unit.

Note:

The HSS ﬂash mode results in shorter ranges.

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