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192
Technical Notes
12
Shoe-mounted ash units
Shoe-mounted ash units
EF-X500: This clip-on fl ash unit has a Guide Number of 50/164
(ISO100, m/ft.) and is powered by four AA batteries or an option-
al EF-BP1 battery pack. The fl ash head can be rotated 90° up, 10°
down, 135° left, or 180° right for bounce lighting.
EF-42: This clip-on fl ash unit (powered by four AA batteries) has
a Guide Number of 42/137 (ISO100, m/ft.) and supports man-
ual 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, 180° left, or 120° right for bounce lighting.
EF-X20: This clip-on fl ash unit has a Guide Number of 20/65
(ISO100, m/ft.). Powered by two AAA batteries, this light, com-
pact unit features a dial for adjusting TTL fl ash compensation or
manual fl ash output.
EF-20: This clip-on fl ash unit (powered by two AA batteries) has
a Guide Number of 20/65 (ISO100, m/ft.) and supports TTL fl ash
control (manual fl ash control is not supported). The fl ash head
can be rotated upwards 90° for bounce lighting.
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