Olympus FL-14 vs Fujifilm EF-42: Compact Flash Compared
By Camera Wholesalers | Published: 2026-11-02
Category: Comparisons
Compare the Olympus FL-14 and Fujifilm EF-42 on size, guide number, battery type, and TTL compatibility to pick the right small flash for your camera.
Quick answer
Choose the Olympus FL-14 if you shoot Micro Four Thirds and want the smallest possible TTL fill light that runs on two AAA batteries. Choose the Fujifilm EF-42 if you shoot Fujifilm and need more power, bounce, and zoom range from a flash that runs on four AA batteries.
Size and power are the real dividing line
The FL-14 is built for portability: its guide number is 46' at ISO 100 and 14mm, and it covers a 14mm lens on Micro Four Thirds. That is enough to lift shadows indoors or add fill on a sunny day, but it will not light a large room or compete with daylight at a distance.
The EF-42 is a larger, more capable unit with a guide number of 138' at ISO 100 and 105mm, plus a 24-105mm zoom range that extends to 20mm with the included panel. That extra output and coverage make it more versatile for events, portraits, and bounce work, at the cost of bulk and a higher price.
Battery choice affects your workflow
The FL-14 runs on two AAA batteries and recycles in 4.5-5.5 seconds. AAA cells are easy to find, but the slower recycle time and lower capacity mean you should carry spares for a full day of shooting.
The EF-42 runs on four AA batteries and recycles in 3-3.5 seconds. AA batteries are widely available and the faster recycle keeps up better with continuous shooting, though the flash is heavier and takes up more bag space.
TTL compatibility ties each flash to its system
The FL-14 is compatible with Olympus TTL, so it communicates metering data with Olympus and Micro Four Thirds cameras for automatic flash exposure. The EF-42 is compatible with FUJIFILM TTL, designed for Fujifilm cameras. Neither flash is a universal fit: check your camera brand before buying, because cross-brand TTL usually will not work.
The EF-42 also adds a tilting head (90° upward) and rotation (120° right, 180° left), which lets you bounce light off walls or ceilings for softer results. The FL-14's fixed head limits you to direct flash, so it is best used as a small fill source rather than a shaping tool.
Trade-offs to weigh
- Portability vs. output: The FL-14 is exceptionally compact and light, but its guide number of 46' limits its reach. The EF-42 is larger and heavier but delivers a guide number of 138' for more demanding lighting. If you value a flash you can leave on the camera all day, the FL-14 wins; if you need reach, the EF-42 does.
- Bounce capability vs. simplicity: The EF-42 tilts and rotates for bounce lighting, which softens shadows and improves portraits. The FL-14 has a fixed head, so it only fires directly. Bounce is the biggest practical reason to accept the EF-42's extra size.
- Battery and recycle trade-off: The FL-14 uses two AAA batteries and recycles in 4.5-5.5 seconds; the EF-42 uses four AA batteries and recycles in 3-3.5 seconds. Faster recycle and common AA cells favor the EF-42 for continuous shooting; AAA convenience favors the FL-14 for occasional use.
Product facts
- Olympus FL-14 Flash: Guide number 46' at ISO 100 and 14mm; coverage for 14mm Micro Four Thirds; runs on 2 AAA batteries; recycle 4.5-5.5 seconds. It is a pocketable TTL fill light for Micro Four Thirds, but its low output and slow recycle suit casual and close-range use rather than demanding events.
Olympus FL-14 Flash - Fujifilm EF-42 Flash: Guide number 138' at ISO 100 and 105mm; zoom range 24-105mm (20mm with panel); tilts 90° and rotates 120° right/180° left; runs on 4 AA batteries; recycle 3-3.5 seconds. It offers much more power and bounce flexibility for Fujifilm shooters, making it a better choice for portraits and indoor events where you need to shape light.
Fujifilm EF-42 Flash
Which flash fits your camera bag?
Best for
- Micro Four Thirds shooters who want a tiny TTL fill flash for travel or everyday carry
- Photographers who prefer AAA batteries and direct flash for close-range subjects
Not for
- Fujifilm camera owners, because the FL-14 is not compatible with Fujifilm TTL
- Anyone who needs bounce lighting or high output for events and portraits
