High-Speed Sync

High-speed sync enables flash photography at even higher shutter speeds than the maximum flash sync shutter speed. This is effective when shooting with an open aperture in Aperture-priority AE (aperture-priority AE) mode to blur the background behind subjects outdoors in daylight, for example.

  1. Push the joystick straight in.

  2. Select the item shown in (1).

    • Press the joystick vertically or horizontally or turn Select dial to select the item, then push the joystick straight in.

  3. Select High-speed sync.

    • Press the joystick horizontally or turn Select dial to select High-speed sync, then push the joystick straight in.
    • Before shooting, confirm that High-speed sync appears in the viewfinder.

Caution

  • With high-speed sync, the faster the shutter speed, the lower the guide number. You can check the effective flash range on the LCD panel.
  • To avoid wearing out or damaging the flash head from overheating, the Speedlite may reduce the continuous flash count in repeated shooting with high-speed sync.

Note

  • High-speed sync is not displayed in the viewfinder at shutter speeds slower than the maximum flash sync shutter speed.
  • To return to normal flash firing, select First-curtain sync (first-curtain sync) in step 3 (First-curtain sync is not displayed on the screen after configuration).
  • SYNC (shutter sync) can also be assigned to vertical or horizontal joystick positions in P.Fn-08.