Hi i recently bought a canon 550d camera and Nissin di866 flash, can anyone teach me how to activate the small flash infront? As i have read the instruction book throughly but still do not get it, thanks.
1) From main menu, left arrow to select TTL screen (Blue one) by pressing "Set" button.
2) In TTL screen, press and hold "Set" button for more than 2 seconds. Another sub-menu will show up.
3) Left or right arrow to select power output of sub flash. Would suggest 1/8 or 1/16 since it's a fill-in flash.
4) Flash head must be tilted upwards in order to work. "SUB" word will appear.