With the GR camera, yesterday Ricoh also announced a new GF-2 flash exclusively designed for use with the GR IV. When used with the ISO Auto Flash mode on the GR IV, the GF-2 allows the camera to automatically adjust its guide-number and ISO sensitivity settings according to the subject’s distance. For pre-orders and availability, check the links below:
- US: B&H Photo
- DE: Foto Erhardt
- UK: WEX Photo
- Manual Flash For Ricoh GR IV
- Extremely Slim & Portable
- Guide Number: 9.8′ at ISO 100
- Up to 270 Full-Power Flashes
- Recycling Time: 2 sec
- Built-In USB-C Rechargeable Battery
Additional information:
External Flash RICOH GF-2 Super-compact flash, exclusively designed for use with the RICOH GR IV
TOKYO, August 21, 2025 — RICOH IMAGING COMPANY, LTD. is pleased to announce the release of the External Flash RICOH GF-2. With a maximum guide number of 3 (at ISO 100/m), this super-compact, ultra-lightweight accessory flash unit provides an auto flash function when mounted on the RICOH GR IV compact digital camera body.
Main features
1. Super-compact design
Exclusively designed for use with the RICOH GR IV high-end digital compact camera, the GF-2 features a super-compact body for outstanding portability, making it perfect for carrying in a pocket without the need to remove it from the camera body.
2. Simple, effortless operations
When mounted on the RICOH GR IV and the camera set to the ISO Auto Flash mode, the GF-2 allows the camera to automatically adjust its guide-number and ISO sensitivity settings according to the subject’s distance. This flash mode enhances the GR IV’s snapshot operations in casual flash photography.*
* When mounted on a RICOH GR-series model other than the GR IV, the GF-2 only operates in the full-discharge mode, because the alignment of flash contacts (except for the X-sync contact) differs from that of the GR IV.
The firmware designed to allow a GR-III-series camera to automatically adjust the exposure level according to its focusing status is currently under development. This firmware is scheduled to be released in October 2025.
3. Built-in lithium-ion battery
The GF-2 incorporates a rechargeable lithium-ion battery, which can be charged via an USB Type-C terminal. Even when the camera’s battery runs low, this built-in battery stabilizes the flash discharge level.
Specifications
| Type | Clip-on type external flash |
|---|---|
| Guide number | 3 (ISO 100), 6 (ISO 400) |
| Flash mode*1 | Guide number control by interlocking with camera rangefinder, manual flash (1/1, 1/4) |
| Flash angle | 18mm focal length (wide conversion lens is not supported*2) Up and down angle: 47° Left and right angle: 66° |
| Flash interval | Approx. 2 seconds |
| Number of flashes | Approx. 270 times (when fully charged) |
| Power supply | Rechargeable lithium-ion battery (not replaceable) |
| Charging method | USB Type-C (5 V, 0.1 A or more) Charging time: Approx. 2 hours |
| Operating temperature | 0 to 40°C (32 to 104°F) |
| Operating humidity | 85% or less (no condensation) |
| Storage temperature | -20 to 45°C (-4 to 113°F) (for 3 months) |
| Dimensions and weight | Approx. 51 (W) × 31 (H) × 17 (D) mm (Approx. 2.0 (W) × 1.2 (H) × 0.7 (D) in.) Approx. 19 g (Approx. 0.7 oz) |
*1 When installed on GR IV
*2 Vignetting occurs due to the lens frame of GW-4
