Red-eye reduction, Using rear- or second-curtain synchronization – Bolt VX-760C Wireless TTL Flash for Cameras User Manual
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Red-Eye Reduction
Red-Eye Reduction
The VX-760C supports red-eye reduction on cameras that offer the setting. Consult your camera’s instruction
manual to find out how to activate it.
Using Rear- or Second-Curtain Synchronization
When you photograph a moving subject with a flash and a slow shutter speed (1/30 second or longer), the
flash will freeze the moving subject and the long exposure will cause motion blur and light trails to appear in
the image, especially in low light.
This slow-sync flash technique, also known as “dragging the shutter,” can be applied in two different ways.
The first, which is called front-curtain or first-curtain flash sync, synchronizes the flash with the camera’s
shutter release so that the flash fires at the beginning of the period when the shutter opens. This causes
motion blur and light trails to appear in front of moving subjects.
The second method, which is called rear-curtain or second-curtain sync, synchronizes the flash to fire near