14. LCD screen: Display all functions and application setting of speedlite, convenient for users’ examination and
quick setting.
15. High-speed /rear curtain synchronous button:Rear curtain sync and high-speed synchronous function can
be set by directly operating this button.
16. ZOOM button: Directly operating [ZOOM] button can adjust the zoom rang of lamp holder (auto, 24, 28, 35,
50, 70, 80, 105mm).
17. Power switch (ON/OFF): Press this button for about 2 seconds and turn on or off the power of speedlite.
18. Selection/setting button set: Include [Left], [Right], [Up], [Down] and [Ok] at the center; [Left] and [Right]
button can set exposure compensation, output power, advanced options parameter, stroboscopic flash times,
stroboscopic flash frequency; [Up] and [Down] button can set exposure bracketing, fine brightness adjustment and
advanced options number.
19. MODE: Under the camera set-up state, flash mode shall switch between TTL/M/Multi with every pressing;
under wireless off-camera state, trigger mode of the speedlite shall switch between Sc/Sn/S1/S2 with every
pressing. And if press [MODE] for a long time, shift between the camera set-up and off camera state can be made.
20. Backlight/sound switch: LED backlight can be turned on or off by pressing this button for a short time; and
sound prompt function of the speedlite shall be turned on or off by pressing this button for about 2 seconds.
21. Charge indicator/test button (PILOT): Red lamp means charge is completed, flash can be made; green lamp
means charge is being on, and press this button (PILOT), the speedlite shall send test speedlite.