1. Introducción
The Fujifilm EF-20 is a compact shoe mount flash designed to provide additional illumination for your photography. It features TTL (Through-The-Lens) flash technology for precise exposure control, multi-directional bounce capabilities, and automatic zooming. This manual provides essential information for the safe and effective use of your EF-20 flash unit.

Figura 1: Lado view of the Fujifilm EF-20 flash unit, showcasing su diseño compacto.
2. Información de seguridad
- Do not disassemble or modify the flash unit. This can cause electric shock or malfunction.
- Mantenga el flash seco. No lo exponga al agua ni a la humedad.
- Avoid direct eye contact with the flash light, especially at close range, as it can temporarily impair vision.
- Mantener fuera del alcance de los niños.
- Use only specified batteries (AA). Incorrect battery types can cause leakage, heat, or explosion.
- Retire las baterías si la unidad de flash no se utilizará durante un período prolongado.
3. Contenido del paquete
Asegúrese de que todos los artículos estén presentes en el paquete:
- Unidad de flash con montura de zapata Fujifilm EF-20
- Soft case (if included with your purchase)
- Manual de instrucciones (este documento)
Nota: Las baterías no están incluidas y deben comprarse por separado.
4. Configuración
4.1 Instalación de la batería
- Abra la tapa del compartimiento de la batería ubicada en el costado de la unidad de flash.
- Inserte dos (2) baterías AA, asegurándose de la polaridad correcta (+/-) como se indica dentro del compartimiento.
- Cierre bien la tapa del compartimento de la batería.

Figura 2: Posterior view of the EF-20 flash unit, illustrating the location of the battery compartment and control panel.
4.2 Montaje de la unidad de flash
- Asegúrese de que tanto la cámara como la unidad de flash estén apagadas.
- Slide the flash unit's mounting foot into the camera's hot shoe until it clicks into place.
- Tighten the locking wheel on the flash unit's foot to secure it firmly to the camera.
- To remove, loosen the locking wheel and slide the flash unit out of the hot shoe.

Figura 3: Frente view of the EF-20 flash, showing its design and the hot shoe mounting foot.
5. Instrucciones de funcionamiento
5.1 Encendido / Apagado
Presione el FUERZA button on the rear of the flash unit to turn it on or off. The ready lamp will illuminate when the flash is charged and ready to fire.
5.2 TTL Flash Technology
The EF-20 utilizes High Precision TTL (Through-The-Lens) flash technology. When mounted on a compatible Fujifilm camera, the flash output is automatically adjusted based on the camera's metering system to achieve optimal exposure.
5.3 Exposure Compensation (EV Adjust)
To adjust the flash exposure compensation, press the EV ADJUST button on the rear of the flash. Each press cycles through available compensation values (-1, -0.5, 0, +0.5, +1 EV). The corresponding indicator lamp will light up. This allows for fine-tuning the flash output relative to the camera's automatic setting.
5.4 Bounce Flash (Multi-Directional)
The flash head can be tilted upwards to bounce light off a ceiling or wall, creating softer, more natural illumination and reducing harsh shadows. The EF-20 features a multi-directional tilting head.

Figura 4: Lado view of the EF-20 flash demonstrating the upward tilt capability of the flash head for bounce photography.
5.5 Automatic Zooming
The EF-20 features automatic zooming, which adjusts the flash coverage to match the focal length of the lens being used, ensuring efficient light distribution.
5.6 Full Manual Control
In addition to TTL, the flash offers full manual control options, allowing users to set the flash output power directly for specific creative effects or challenging lighting conditions. Refer to your camera's manual for specific settings related to external flash control.
5.7 Test/Ready Button
El TEST/READY El botón cumple dos funciones:
- When the flash is charged, pressing this button will fire a test flash.
- El lamp next to this button indicates when the flash is fully charged and ready to fire.

Figura 5: Frente view of the EF-20 flash with its integrated wide-angle diffuser extended, useful for broader light spread.
5.8 Cámaras compatibles
The Fujifilm EF-20 flash is compatible with various Fujifilm cameras, including but not limited to:
- X10, X100, X100S
- HS20EXR, HS22EXR, HS25EXR, HS28EXR, HS30EXR, HS33EXR
- S30EXR, S33EXR
- SL240, SL260, SL280, SL300, SL305
For the most current compatibility list, please refer to the official Fujifilm website or your camera's instruction manual.
6. Mantenimiento
- Limpieza: Utilice un paño suave y seco para limpiar la unidad de flash. Para la suciedad difícil, frote ligeramente.ampen the cloth with water and then wipe dry. Do not use organic solvents like alcohol or paint thinner.
- Cuidado de la batería: Always remove batteries when the flash is not in use for extended periods to prevent leakage. Dispose of used batteries according to local regulations.
- Almacenamiento: Guarde la unidad de flash en un lugar fresco y seco, alejado de la luz solar directa y de temperaturas extremas.
7. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| El flash no dispara. |
|
|
| La salida del flash es demasiado débil/fuerte. |
|
|
| Flash takes a long time to recycle. |
|
|
8. Especificaciones
| Número de modelo | EF-20 |
| Número de guía | 20 (at ISO 100) |
| Tipo de flash | Shoe Mount, External |
| Flash Control | TTL, Manual |
| Fuente de poder | 2 pilas AA |
| Duración de la batería | Aproximadamente 6 horas (dependiendo del uso) |
| Velocidad de sincronización del flash | 1/180 or 1/250 (camera dependent) |
| Dimensiones (An x Al x Pr) | 1.8 x 5.8 x 4.1 pulgadas (aproximadamente) |
| Peso | 3.52 onzas (sin pilas) |
| Primero disponible | 8 de febrero de 2011 |
9. Garantía y soporte
9.1 Aviso Legal
This product is provided "as is" with no warranty. Please refer to your purchase agreement for any applicable retailer or third-party warranties.
9.2 Atención al cliente
For further assistance or inquiries, please visit the official Fujifilm support website or contact their customer service department. Contact information can typically be found on the Fujifilm official websitio.