Rear Curtain Sync; Creating A Natural-Looking Stream Of Light - Kodak DCS 600 Series User Manual

Rear Curtain Sync

Creating a Natural-looking Stream of Light

Normally in flash synchronization, the Speedlight fires at the beginning of the exposure.
When the shutter speed is slow, the result is a streaking light pattern in front of the subject.
When Rear-Curtain Sync is set, the Speedlight fires at the end of the exposure, turning
available light into a stream of light that follows the flash-illuminated moving subject.
Since Rear-Curtain Sync is especially effective at a slow shutter speed, Slow Sync is
automatically set at the same time that Rear-Curtain Sync is set in Programmed Auto or
Aperture-Priority Auto exposure mode. To set a specific shutter speed, set your camera to
Manual exposure mode.
Manual exposure mode (M) is recommended with Rear-Curtain Sync.
Aperture-Priority (A) or Programmed (P) Auto Exposure modes can also be used. In these
modes, the camera automatically chooses the proper f-stop and shutter speed. Confirm the
shutter speed. If it is too slow, use Manual (M) Exposure mode.
Shutter-Priority Auto (S) Exposure mode is not recommended because the f-stop goes out
of range for Auto Aperture mode in dark scene conditions.
Rear-Curtain Sync with slow shutter
speed
Front-Curtain Sync with slow shutter
speed 11
11-15