Canon Speedlite 90EX Flash Specifications

SpecificationsCanon Speedlite 90EX Flash
  Canon Speedlite 90EX Flash
Power: Guide No (ISO 100) 30' / 9m (at 24mm)
Angle of Flash Coverage  
Manual 24mm
With Diffuser
AF Assist Beam  
AF Assist Beam Type Intermittent flash firing
AF Assist Beam Points
AF Assist Beam Min Focal Length 24mm (APS-C 15mm)
AF Assist Beam Range – Center 9.2' (2.8m)
AF Assist Beam Range – Periphery 8.2 (2.5m)
Flash Exposure Modes  
Auto Exposure Standards Supported E-TTL II/E-TTL
External Auto Flash Exposure Sensor N
Manual Flash Exposure N
Features Controllable from Flash  
High Speed Sync N
Flash Exposure Lock (FEL)
Flash Exposure Compensation (FEC) N
Flash Exposure Bracketing (FEB) N
Second Curtain Flash Sync N
Modelling Flash N
Color Temperature Info Communication Y
Supports Flash Settings by Camera Menu
(Enables many options not available directly on the flash)
Custom Functions 1
Personal Functions
Wireless Flash Capabilities  
Wireless Flash Transmitter Capability Y
Wireless Transmission Type Optical
Transmitter Max Range – Indoors 23.0' (7m)
Transmitter Max Range – Outdoors 16.4' (5m)
Wireless Flash Slave Capability
Wireless Flash Groups 3
Wireless Flash Channels 4
Remote Shutter Release Capability N
Flash Head Movement Range  
Flash Head Movement Up Fixed
Flash Head Movement Down
Flash Head Movement Left
Flash Head Movement Right
Flash Features  
Dust and Water Resistance N
PC Terminal N
Power Source  
Power Source 2x AAA
Number of Flashes (approx)
Recycling Time – NiMH (approx)
Recycling Time – Alkaline (approx) 0.1 - 5.5 sec.
External Power Source
Size (WxHxD) 1.7 x 2.0 x 2.6"
(44.2 x 52.0 x 65.0mm)

Weight 1.8 oz (50g)
Compatible Accessories Off-camera shoe cord OC-E3
EX Series Speedlite with Optical Slave function
Dedicated Flash Bracket
Compatible Cameras All Canon EOS cameras
PowerShot G series cameras
Review Canon Speedlite 90EX Flash
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