Yongnuo YN-622C Datasheet download pdf (Page 15)

2. 2nd curtain sync

The flash fires right before the shutter closes, lower shutter

speed needs to be used, support bulb 2nd curtain sync flash.

1. 1st Curtain sync

The normal flash sync.

Shutter Sync

3. Hi-speed Sync(HSS/FP FLASH)

The flash can sync with all shutter speeds when . The

max speed is 1/8000s or 1/4000s（depends on the camera）.

using hss

※ Enable the wireless flash function, 2nd curtain sync will be

unable to use.

※ In case of using hot-shoe flash which does not support hi-

speed sync, the max sync speed is 1/250s or less.

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Yongnuo YN-622C Datasheet Page 15