Canon Speedlite 90EX Instruction Manual - Page 33

Wireless Master Function, AF-Assist Beam, Power Source, Dimensions, Weight - aaa powered unit

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 Wireless Master Function ..... Optical pulse method Transmission channel 1 - 4 Transmission angle Approx. ±40° horizontally and approx. ±30° vertically Transmission distance Indoors: Approx. 0.7 - 7 m / 2.3 - 23.0 ft., Outdoors: 0.7 - 5 m / 2.3 - 16.4 ft. Slave unit control 3 groups (A/B/C) Flash ratio 8:1 - 1:8, 1/2-stop increments  AF-Assist Beam Intermittent flash firing Effective range: Center: Approx. 2.8 m / 9.2 ft., Periphery: Approx. 2.5 m / 8.2 ft.  Power Source Battery Two size-AAA/LR03 alkaline batteries Recycling time Approx. 0.1 - 5.5 sec. Battery life (flash count Approx. 100 flashes or more  Dimensions (W x H x D 44.2 x 52 x 65 mm / 1.7 x 2.0 x 2.6 in.  Weight Approx. 50 g / 1.8 oz. (excluding batteries)  All specifications above are based on Canon's testing standards.  Product specifications and external appearance are subject to change without notice. 31

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31
Wireless Master Function
.....
Optical pulse method
Transmission channel
......................
1 - 4
Transmission angle
..........................
Approx. ±40° horizontally and approx. ±30° vertically
Transmission distance
.....................
Indoors: Approx. 0.7 - 7 m / 2.3 - 23.0 ft., Outdoors:
0.7 - 5 m / 2.3 - 16.4 ft.
Slave unit control
.............................
3 groups (A/B/C)
Flash ratio
........................................
8:1 - 1:8, 1/2-stop increments
AF-Assist Beam
.......................
Intermittent flash firing
Effective range: Center: Approx. 2.8 m / 9.2 ft.,
Periphery: Approx. 2.5 m / 8.2 ft.
Power Source
Battery
..............................................
Two size-AAA/LR03 alkaline batteries
Recycling time
..................................
Approx. 0.1 - 5.5 sec.
Battery life (flash count)
...................
Approx. 100 flashes or more
Dimensions
(W x H x D)
...........
44.2 x 52 x 65 mm / 1.7 x 2.0 x 2.6 in.
Weight
.......................................
Approx. 50 g / 1.8 oz. (excluding batteries)
All specifications above are based on Canon’s testing standards.
Product specifications and external appearance are subject to change without notice.