Metz 34 CS-2 Flash exposure correction, Exposure verification, Exposure corrections in auto mode

Flash exposure correction

Correzione dell’esposizione flash

Corrección de exposición

Exposure verification

Indicazione di corretta esposizione

Indicación de control de exposición

☛

Fig. 6

Fig. 6

Grab. 6

6. Flash exposure correction

Automatic exposure systems are based on a reflection fac- tor of 25%, this being the average degree of reflection for subjects shot with flash. A dark background that absorbs a lot of light, or a bright background that bounces off a great deal of light (e.g. backlit scenes), can result in overexposu- re or underexposure of the subject, as the case may be.

6.1 Exposure corrections in auto mode

To compensate the above described effect, exposure can be corrected by opening or stopping down the camera’s aperture. If the background is mainly bright, the flashgun’s sensor will cut off the flash too soon with the result that the subject will be underexposed. With a dark background the flash is cut off too late so that the subject looks too light.

Bright background:

open the camera’s aperture 2 to 1 f-stop (e.g. from f/5.6 to f/4)

Dark background:

Close the camera’s aperture 2 to 1 f-stop (e.g. from f/8 to f/11)

7. Exposure verification

The exposure o.k. indicator lights up only when the pic- ture will be, or was, correctly exposed in the auto mode.

Trigger a test flash with the manual firing button		(fig. 8).
If the exposure o.k. indicator	remains dark after the test

flash was fired, then set the next smaller f-number or dimi- nish the distance to the reflection surface or subject, and repeat the test flash.

The f-stop established in this manner must also be set on the camera.

☞To trigger a test flash, hold the camera and the flashgun in the same manner as for the actual shot. There is no exposure verification on the SLAVE unit in the cordless Metz remote mode. Only the indication on the controller (master) is relevant for correct exposure confirmation.

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