If you want to test the flash, just press the glowing orange button. To elegantly illuminate the watch face in green, press the button at the top. For use up to 9ft, select RED AUTO mode on the front slide switch and set the aperture shown on your camera’s rake dial. As shown for ASA 125 film, set to f/8.
The flash will emit a high-pitched tone while charging, and the flash open control will light up when it’s ready. When the Open Flash button flashes, it indicates that a battery saver circuit is in operation. If the button does not light up within 30 seconds, your batteries should be replaced.
NOTE: The Flash On message will appear when the camera detects that a flash is required. When this message appears, it is recommended to press the Flash/Up button and select one of the flash options: Auto Flash, Always On or Red-Eye Reduction. The flash is activated for each photo.
Flashing Red Indicator Light:
When the red indicator light is flashing, it indicates the camera is in setup mode and ready for Wi-Fi setup via your mobile device .
Use only with mechanical cameras or with cameras rated for use with synchronous voltages of 250 volts or higher. Slide it into your hot shoe like you would any other flash. For older cameras, pull the sync cord out from the bottom and plug it into your shutter or camera. Set points Set the calculator to your film sensitivity.
Portable off-camera flash
For years, the Vivitar 285HV has been one of the most popular affordable off-camera flashes. These clip-on flashes were once touted as one of the best workhorse manual flashes money could buy. They were tough, durable and cheap!