Can an external flash unit be used with the camera? (PowerShot G16)

Solution

    The following optional flash units and accessories can be used with the camera.
    High-Power Flash HF-DC2

    External flash for illuminating subjects that are out of range of the built-in flash. High-Power Flash HF-DC1 can also be used.
    Speedlite 600EX-RT, 600EX, 580EX II, 430EX II, 320EX, 270EX II

    Shoe-mounted flash unit that enables many styles of flash photography. Speedlite 580EX, 430EX, 270EX, and 220EX are also supported.
    Speedlite Bracket SB-E2

    Prevents unnatural shadows next to subjects during vertical shooting. Includes Off-Camera Shoe Cord OC-E3.
    Speedlite Transmitter ST-E2

    Enables wireless control of slave Speedlite flash units (except Speedlite 220EX/270EX).
    Macro Twin Lite MT-24EX
    Macro Ring Lite MR-14EX

    External macro flash unit that enables many styles of macro flash photography. Requires Conversion Lens Adapter LA-DC58L, Off-Camera Shoe Cord OC-E3, and Bracket BKT-DC1 (all sold separately) for attachment to the camera. Requires Conversion Lens Adapter LA-DC58L (sold separately) for attachment to the camera.
    Off-Camera Shoe Cord OC-E3

    Used to attach a Macro Twin Lite flash to the camera.
    Bracket BKT-DC1

    Used to attach a Macro Twin Lite flash to the camera.
    Conversion Lens Adapter LA-DC58L

    Adapter required to attach the Teleconverter or Macro Ring Lite/Macro Twin Lite flash to the camera.

    IMPORTANT
    The following camera accessories are sold separately. Note that availability varies by area, and some accessories may no longer be available.