Controlling The Ringflash - Canon Powershot G15 Manual

or rotate the ring counterclockwise to decrease the ISo, when
finished, click the upper half of the dial to exit the ISo setting
mode. The range is 80 to 12,800. Start off with 3200. In general,
as you increase the speed, you also increase the graininess/
noise in the image.

ContRoLLInG the RInGFLAsh

(FIGURE 3)
HoLD FoR 2 SECoNDS
AUto-DIm AnD AUto-oFF
The ringflash LCD is backlight illuminated for operation in the dark.
The ringflash will Auto-Dim the LCD backlight 15 seconds after a but-
ton push to save battery life. The ringflash will automatically turn
itself off after 15 minutes, if the LEDs are not on and no buttons have
been pushed.
BUttons on the RInGFLAsh ContRoLLeR
PILot
This is a test mode. Press this button to show the effect of your cur-
rent selections. That is, if you chose blue LEDs and the FLASH mode,
you can press PILoT and it will flash with the blue LEDs.
moDe
You can toggle through the modes by pressing the MoDE button
on the controller. You will see on the ringflash display that you can
choose "FLASH", "L" (Left Half), or "R" (Right Half). By choosing FLASH,
the ringflash will flash all the Blue or all the White LEDs when you take
6
The ringflash controller is attached to
the hot shoe on the camera. To turn
on the ringflash, press the controller's
oN/oFF button (for approximately two
seconds) (Figure 3) until the controller's
LCD lights up. The ringflash contains
two different colors of LEDs, white and
blue (470nm). You can control the in-
tensity (brightness) of the LEDs and you
can choose to use only the left half of
the ringflash, only the right half of the
ringflash or both halves. To turn off the
ringflash, press the controller's oN/oFF
button for approximately two seconds.