FujiFilm X-A3 Owner's Manual page 136

Optional Accessories
FUJINON Lenses FUJINON Lenses
XF-series lenses: Interchangeable lenses for use exclusively with the FUJIFILM X-mount.
XC-series lenses: Interchangeable lenses for use exclusively with the FUJIFILM X-mount.
Shoe-mounted fl ash units Shoe-mounted fl ash units
EF-X500: Powered by four AA batteries or an optional EF-BP1 battery pack, this clip-on fl ash unit has a Guide
Number of 50/164 (ISO 100, m/ft.) and supports manual and TTL fl ash control and auto power zoom in the
range 24–105 mm (35 mm format equivalent). The fl ash head can be rotated 90° up, 10° down, 135° left,
or 180° right for bounce lighting.
EF-20: This clip-on fl ash unit (powered by two AA batteries) has a Guide Number of 20/65 (ISO 100, m/ft.)
and supports TTL fl ash control. The fl ash head can be rotated upwards 90° for bounce lighting.
EF-42: This clip-on fl ash unit (powered by four AA batteries) has a Guide Number of 42/137 (ISO 100, m/ft.)
and supports TTL fl ash control and auto power zoom in the range 24–105 mm (35 mm format equivalent).
The fl ash head can be rotated 90° up, 180° left, or 120° right for bounce lighting.
EF-X20: This clip-on fl ash unit has a Guide Number of 20/65 (ISO 100, m/ft.).
120