Bolt VS-560N, Руководство пользователя

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Using Rear- or Second-Curtain Synchronization
This “slow-sync” flash technique, also referred to as “dragging the shutter,” can be applied in two different
ways: The flash can be synchronized with the camera’s shutter release so that it fires at the beginning of the
period when the shutter opens, or it can fire near the end of that period.
The former is called “front-curtain” or “first-curtain” flash sync, and the latter is called “rear-curtain” or
“second-curtain” sync. Front-curtain sync causes motion blur and light trails to appear in front of moving
subjects, while rear-curtain sync makes them appear behind moving subjects. That means rear-curtain sync
creates a more realistic impression of movement.
The VS-560N supports rear-curtain sync modes on cameras that offer the setting. Consult your camera’s
manual to find out how to activate it. Use your camera’s manual or shutter-priority mode to control the amount
of blurring and light trails you capture by varying the shutter speed.