Fuji EF 20 Manual

The Fuji EF 20 is a compact external flash unit designed for Fujifilm cameras, featuring guide number 20 (ISO 100, m), automatic and manual flash modes, TTL auto flash operation, bounce capability, and compatibility with various Fujifilm X-series cameras. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting to Camera 7. Flash Operation Modes 8. Advanced Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Flash head with bounce capability, hot shoe connector, power switch, mode button, test button, ready lamp, and battery compartment.

Feature	Description
Guide Number	20 (ISO 100, m)
Flash Coverage	28mm equivalent
Bounce Capability	Up to 90 degrees vertical
Power Source	2x AA batteries
Recycling Time	Approx. 4 seconds
Flash Duration	1/1000 to 1/20,000 sec
TTL Operation	Through-the-lens auto flash
Manual Mode	Full, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 power
Wireless Mode	Optical wireless triggering
Compatibility	Fujifilm X-series cameras

Installation

Unpack and inspect contents. Ensure camera is turned off before installation.

Insert batteries: Open battery compartment, insert 2x AA batteries with correct polarity.
Attach to camera: Slide flash unit into camera's hot shoe until it clicks into place.
Secure connection: Tighten locking screw if available.
Power on: Turn on flash unit and camera.

WARNING! Do not force flash into hot shoe. Ensure proper alignment to avoid damage.

First-Time Setup

Power on flash and camera; configure basic settings.

Check battery level: Verify READY lamp illuminates when powered on.
Set flash mode: Press MODE button to select TTL AUTO (recommended for beginners).
Test flash: Press TEST button to ensure proper operation.
Camera settings: Set camera to appropriate flash mode (usually AUTO or P mode).

CAUTION! Do not look directly at flash when firing at close range.

Specifications

Guide Number: 20 (ISO 100, m)
Flash Coverage: 28mm lens angle
Bounce Angle: 0 to 90 degrees vertical
Power Source: 2x AA batteries (alkaline, Ni-MH, lithium)
Recycling Time: Approx. 0.1-4.0 seconds
Number of Flashes: 100-700 (depending on battery type)
Color Temperature: Approximately 5600K
Dimensions: 64.5 x 69.5 x 78.5mm
Weight: Approx. 125g (without batteries)
Operating Temp: 0°C to 40°C

Controls and Settings

Access functions via mode button and camera menu. Front Panel: Power switch, MODE button, TEST button, READY lamp.

Flash Modes: TTL AUTO, MANUAL, WIRELESS SLAVE. Manual Power Settings: Full, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64.

TTL Mode: Automatic exposure control through camera. Manual Mode: Fixed power output settings. Wireless Mode: Optical slave triggering from master flash. Bounce Control: Adjust flash head angle for indirect lighting.

Connecting to Camera

Hot shoe connection only. Compatible with Fujifilm X-mount cameras with TTL support.

Turn off camera and flash before connecting.
Align hot shoe contacts and slide flash into place.
Secure with locking mechanism if available.
Power on devices in sequence: Camera first, then flash.

Tip: Ensure hot shoe contacts are clean for reliable connection.

Flash Operation Modes

Supports TTL auto, manual, and wireless slave modes.

TTL AUTO: Press MODE until TTL indicator appears; camera controls flash output automatically.
MANUAL: Press MODE to select manual power level; use camera settings for exposure control.
WIRELESS: Set to slave mode; triggered by another flash unit's optical signal.
Bounce Flash: Tilt flash head upward (0-90°) for ceiling bounce lighting.
Test Firing: Press TEST button to verify flash operation and exposure.

WARNING! Do not fire flash continuously at high power to prevent overheating.

Advanced Features

High-Speed Sync: Available with compatible cameras for shutter speeds above sync speed. Second-Curtain Sync: Rear curtain synchronization for creative effects. Flash Exposure Compensation: Adjustable via camera menu.

Care & Maintenance

Remove batteries when not in use for extended periods. Clean with dry, soft cloth; avoid solvents.

CAUTION! Do not disassemble flash unit. Store in cool, dry place away from direct sunlight.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE marked for European compliance. Copyright © Fujifilm Corporation. For support, visit www.fujifilm.com or contact local Fujifilm service center.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Flash not firing	Batteries/connections	Check battery level; ensure proper hot shoe connection; verify READY lamp.
Inconsistent exposure	Mode settings/distance	Check TTL mode; ensure subject within flash range; clean contacts.
Slow recycling	Battery power	Replace with fresh batteries; use recommended battery types.
Wireless not working	Mode/sensor	Set to slave mode; ensure optical sensor faces master flash; check distance.
Overheating	Continuous use	Allow flash to cool; reduce firing frequency at high power settings.

Reset: Remove batteries for 30 seconds to reset electronic circuits.

Service: Contact authorized Fujifilm service center; www.fujifilm.com/support