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 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 came- ra’s operating instructions for further details.
4.2 Automatic flash sync speed control
Most system cameras automatically change to flash sync speed when flash readiness is reached. The flash sync shutter speeds may vary between 1/30th and 1/300th second, depending on the camera model. Please refer to the camera’s opera- ting instructions for further details.
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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