The Fuji EF-X20 Flash is a compact hot shoe flash designed to match the styling of the Fuji X-Pro 2 and X-Pro 3. Key features include:

Full TTL Communication and Manual Power Adjustment. The Fuji EF-X20 Flash offers full TTL communication with +1/-1 adjustments in 1/3-stop increments on all Fuji X-series cameras. Throw in manual power adjustment from full power (GN 20 feet @ ISO 100) down to 1/32 flash all set on the manual dial, and it’s like shooting in a time warp.

Optical Slave Mode. If you need an off-camera fill, the EF-X20 features an optical slave mode that can be triggered by any on-camera or built-in flash.

Coverage. It covers 50mm by default, but also has a wide diffuser for 35mm shooting. It’s powered by two AAA batteries, with a full recycle of about 5 to 6 seconds.