Flash techniques Tecniche lampo Técnicas de destello
gives a more realistic impression of movement because the light streaks behind the light source instead of building up in front of it, as is the case when the flash is synchronised with the 1st shutter curtain! Depending on its operating mode, the camera uses shutter speeds slower than its sync speed.
☞The REAR function is only possible with cameras fea- turing this facility. The corresponding setting is made on the camera (see operating instructions of the given camera).
7.2.3 Slow synchronisation / SLOW
In certain operating modes, some cameras permit slow flash synchronisation (SLOW) which will provide added promi- nence to the background at lower ambient light levels. This is achieved by matching the shutter speed to the ambient light. Accordingly, shutter speeds slower than the flash sync speed are automatically adjusted by the camera. Some cameras automatically activate SLOW synchronisation in connection with certain programs (e.g. aperture priority “Av” or “A”,
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