Nissin i400 TTL Flash for Cameras - Manual (Page 12)

You can select the power by rotating the Power dial :
1/256 1/128 – 1/64 – 1/32 – 1/16 – 1/8 – 1/4 – 1/2 –
1/1 (Full) power.
Select your desired F--stop and / or shutter speed. Point at the subject and press
the shutter.
Set the camera shooting mode to either [ AV ](Canon), [ A ](Nikon) or [ M ].
Rotate the Function dial to “M” mode.
Indicator Lamp B on.
Indicator Lamp A on.
Set i400 to the camera’s hotshoe and press the on/ off switch to power on.
In some occasions, or for special expression, you may need your own flash
exposure instead of the automatic controlled exposure. You can set i400 for
non-automatic flash mode, and select the desired flash power from 9
different levels
Manual Exposure Flash
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