6. Flash synchronisation
Different modes of flash synchronisation are pos- sible, depending on the camera model. Please refer to the camera’s operating instructions to find out how the individual modes of synchronisation are set on the camera.
6.1 Normal synchronisation
This mode is available with all TTL cameras, and it is suitable for most flash shots. With normal synchronisation, switching to the camera’s flash sync shutter speed is automatic. The shutter speed may vary from 1/30th and 1/250th seconds, depending on the camera model. Please refer to the camera’s operating instructions for further details.
6.2 Second curtain synchronisation (REAR)
Some cameras offer the facility of second shutter curtain synchronisation.
First curtain | Second curtain |
With normal synchronisation, the flash is fired pre- cisely after the opening of the first shutter curtain. When using slow shutter speeds, and with moving objects, this would result in an unnatural rendition of light traces. With second curtain or rear curtain synchronisation, the flash is fired as the exposure is ending, just before the second curtain covers the film again. This makes the light trail behind the moving objects instead of appearing in front of them, and renders a more natural looking picture.
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