External Flash TTL GF-1 - Beskrivelse

The GF-1 is the external flash that supports TTL flash control using pre-flash.

It utilizes an original TTL flash technique to provide precise flash exposure with auxiliary flash. Also capable of bounce flash to softly and naturally illuminate the subject with indirect light, the GF-1 enables the photographer to enjoy a wide range of creative shooting options only possible with an external flash. There are built-in wide-angle diffuser and catch-light panels. When the wide-angle diffuser panel is used, a coverage angle equivalent to 18 mm is possible.

Guild No.

20 (at 24 mm) ~ 30 (at 105 mm) with ISO 100,

16 (at 24 mm) using the built-in wide panel.

Illumination Coverage

24 ~ 105 mm (18 mm with the wide panel)

Only Type R cameras: Automatically linked to the focal length of the lens as per the auto power zoom

Power Source

4 x AA batteries (not included in a package) * Lithium batteries and NiMH batteries can be used.

Battery Life

Approx. 200 flashes with alkaline batteries (based on Ricoh's own measurements)

Energy Saving

Enters stand-by mode after about 2 minutes of the camera entering stand-by mode or being turned off. Powers off automatically after 30 minutes in stand-by mode. In slave mode, powers off automatically after 60 minutes without operation.

Flash Interval

Approx. 4.7 seconds (with rechargeable Nickel-hydrogen batteries) Approx. 5 seconds (with alkaline batteries)

Flash Output Adjustment

Pre-flash TTL, Ambient light automatic, Manual flash

AF Auxiliary Light


Color Temperature


Flash Duration

1/250 second (full power flash)

1/250 ~ 1/20,000 second (TTL flash)

Slave Flash

SLAVE1, SLAVE2 switching


65 mm (W) x 95 mm (H) x 80 mm (D) (2.6 x 3.7 x 3.2 inch)


Approx. 240 g (excluding batteries)

Compatible camera models

The digital cameras that has the Ricoh flash interface (hereafter Type R cameras)

  • GXR
  • GR