4. Flashgun instructions to the camera

The mecablitz transmits different signals and messages to the camera when it is connected to the camera and is switched on.

4.1 Flash-ready indication

The green light on the mecablitz illuminates when the flash capacitor is fully primed, thereby indicating flash readiness. This means that flash can be used for the next exposure. The flash rea- diness signal is transmitted to the camera where it is indicated by a corresponding display in the camera’s viewfinder. On some cameras (depen- ding on the operating mode and camera model) the shutter is automatically changed to flash sync speed when flash readiness is reached. The flash will not be fired if the shutter is released before the flash ready light illuminates with the result that the exposure may be incorrect if the camera control circuit has already changed over to flash sync speed. Please refer to the camera’s operating instructions for further details.

4.2 Automatic flash sync speed control

When the flash unit is on, the camera will automa- tically switch it to flash sync speed from any ope- rating mode selected. The sync speed depends on the camera model and usually ranges between 1/30 sec. and 1/250 sec. For details please refer to the camera’s instructions for use.

Some camera models will, when the flash unit is on, switch it to flash sync speed as soon as program mode „P“ or full-auto mode is selected. Speeds faster than the flash sync speed cannot be set.

4.3 Correct-exposure indication (see fig. 4)

The red correct exposure light briefly illuminates when flash exposure was correct. At the same time the mecablitz sends an o.k. signal to the camera for display in the viewfinder. Please refer to the camera’s operating instructions for further details.

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Metz 34 AF-3 C Flashgun instructions to the camera, Flash-ready indication, Automatic flash sync speed control