Metz MECABLITZ 50 AF-1 digital Olympus User Manual download pdf (Page 86)

7 Flash modes („Mode“)

Depending on the type of camera different

TTL flash modes, manual flash mode and

high-speed synchronisation FP or HSS are

available. Therefore, data transfer between

flash unit and camera is necessary before

setting the flash mode, e.g. by actuating the

shutter release.

The flash mode is set by using the „Mode“  button.

7.1 TTL-flash modes

The TTL flash modes offer a very simple method of achieving very good flash

shots. In these modes, exposure readings are taken by a sensor built into the

camera, which measures the amount of light through the camera lens (TTL =

„Through The Lens“). Here the camera automatically determines the flash per-

formance required for a correct exposure of the shot. The advantage of the

TTL flash modes is that all factors influencing exposure (filters, change of apertu-

re and focal length with zoom objectives, extensions for close-ups, etc.) are

automatically taken into account in adjusting the flash light.

If the shot was correctly lit, the correct exposure indica-

tion  will flash „OK“ for about 5 seconds (see 4.2).

Please note whether there are limitations for

your camera in terms of film sensitivity for TTL

flash mode (for example, ISO 64 to ISO 1000;

see camera’s operating instructions)!

☞

The TTL flash mode with measuring preflash is a further development of the stan-

dard TTL flash mode of analogue cameras. During the shot and before the actu-

al exposure, one or more almost indiscernible preflashes are executed by the

flash. The light reflected by the preflash is evaluated by the camera. According

to the evaluation, the subsequent flash exposure will be adjusted by the camera

to suit the situation (see the camera's operating manual).

Depending on the camera model, the preflashes precede the main flash

by such a short interval that they practically cannot be distinguished

from the main flash! The preflashes do not contribute to the lighting of

the shot.

Setting procedure

• Press „Mode“ until „ “ flashes in the

display.

The setting takes effect immediately.

After about 5 seconds the display stops flashing and

the setting is saved automatically. „ “ appears in

the display.

Automatic TTL Fill-in flash mode

The automatic TTL flash mode is activated by most

cameras when the automatic programme P is selected and by Vari or subject

programmes during daylight (see camera operating manual).

Fill-in flash mode overcomes troublesome shadows and produces a more balan-

ced exposure between subject and background with contre-jour shots. The

camera’s computer-controlled metering system sets the most suitable combina-

tion of shutter speed, aperture and flash output.

Ensure that the contre-jour light source does not shine directly into the

lens, as this will interfere with the camera’s TTL metering system!

There is no setting or display for automatic TTL fill-in flash in the flash unit.

☞

TTL

☞

F 5,6

7,5

Zoom

105

TTL

☛

F 5,6

7,5

Zoom

105

TTL

☛

✴

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