Nissin i400 TTL Flash for Cameras - Manual (Page 7)

Mounting i400 on the camera
Removing i400 from the camera
Press the unlock button and slide the mounting
foot of i400 off the hotshoe of the camera.
Slide the mounting foot of i400 into the
hotshoe of the camera.
Make sure that thr mounting foot will lock
(with a “click”) when it has been inserted
completely.
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