FLASH REVIEW

Camera Flash / Speedlight: Canon 90EX Speedlite Flash Unit Flashgun REVIEW

Model Name: Canon 90EX Speedlite Flash Unit Flashgun specifications.
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Release Date	July 2012
Strenght / Power
Guide Number (ISO100, meters)	30' / 9.14 m ISO 100
Power Level Switching (Vari-power Range)
Head & Coverage
Bounce (Up-Down) Head Movement	None
Swivel (Rotation) Head movement	None
Focal Length Coverage	24mm (in 35mm format)
Auto Zoom Head
Flash Related Functions
Flash Durations	N/A (no information available)
Flash Modes(TTL)
Flash Exposure Compensation / Correction	-3 EV to +3 EV (in 1/3 EV steps) In-camera control
Secondary Illumination
Wireles Flash
Wireless Operation	Method: Optical Pulse Distance: Up to 22.97' / 7 m
Wireless Groups	4
Wireless Channels	3
Remote Timing Modes
Other Features
Mount	Hot-shoe mount flash
Off Camera Terminal / External Connectors
Included Accessories
Other Functions
Power Source & Recycle Time
Power Source - Batterry	2 x AAA Alkaline, Lithium, Rechargeable NiMH Batteries
External Power
Minimum Recycle Time (Charging time between shooting)	Approximately 0.1 to 5.5 Seconds
Battery Life	Approx. 100 (flashes per set of batteries)
Dimensions & Weight
Dimensions	1.7 x 2.0 x 2.6" / 44.3 x 52.0 x 65.0 mm
Weight	1.76 oz / 50 g
The Canon 90EX Speedlite Flash Unit Flashgun, launched in July 2012, serves as a versatile and dependable lighting tool for photographers. It features a Guide Number of 30' / 9.14 m ISO 100 , ensuring robust illumination. The flash unit features a coverage angle or a focal length of 24mm (in 35mm format). Its Hot-shoe mount allows for easy attachment to cameras, providing stability during shooting.
A notable feature is its Flash Duration capability of N/A (no information available). This wide range enhances adaptability across various lighting conditions, catering to both static scenes and fast-paced action photography.
The Canon 90EX Speedlite Flash Unit Flashgun is powered by using 2 x AAA Alkaline, Lithium, Rechargeable NiMH Batteries, with an estimated battery life of Approx. 100 (flashes per set of batteries), ensuring sustained performance during extended photo sessions.
The Minimum Recycle Time, Approximately 0.1 to 5.5 Seconds, emphasizes efficiency, enabling photographers to capture successive shots seamlessly, especially in dynamic shooting scenarios.
In addition, the Canon 90EX Speedlite Flash Unit Flashgun is compact and portable, the flash unit measures 1.7 x 2.0 x 2.6" / 44.3 x 52.0 x 65.0 mm and weighs 1.76 oz / 50 g. This review aims to assist you in determining if this flash suits your specific needs.
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Fivercam Wiki information:

There are three ways to trigger off-camera flash units wirelessly: via infrared, radio signals or a hybrid method that involves both infrared and radio. The infrared system works like the TV remote; there need to be a direct line of sight for the signal to reach the destination. The radio signal has no line-of-sight limitations, but comes at a rather high cost. The hybrid system simply takes the infrared signal from the commander, converts it over to radio and then converts it back to infrared on slave units.

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