Canon SPEEDLITE EL-1 Advanced User's Manual page 230

Wireless functions for radio transmission
Wireless settings
Communication
functions
* 1: Without any obstructions between senders and receivers, and without radio interference from other
devices
* 2: Transmission range may be shorter depending on factors such as how units are arranged, the
surrounding environment, and weather conditions
Supports linked shooting with automatic shutter release of up to 16 cameras (sender: 1; receivers:
15) linked to shutter release on the sender camera.
Linked functions
* Shooting is not simultaneous, because receiver cameras shoot slightly after the sender camera shutter
release timing
Wireless functions for optical transmission
Wireless settings
Communication
functions
Sender
Receiver
Compliance standards
Communication method
Transmission frequency
Channel
Wireless radio ID
1 2
Transmission range * *
Groups
Max. sender units
Max. receiver units
Sender
Receiver
Individual receiver
Communication method
Channel
Transmission range (approx.)
Reception angle (approx.)
Groups
Max. sender units
Max. receiver units
Supported
* Secondary and additional units serve as sub-senders and display a "SUB SENDER" icon
* Sub-senders cannot be remotely controlled by a receiver unit
Supported
IEEE 802.15.4, ARIB STD-T66
Primary modulation: OQPAK
Secondary modulation: DS-SS
2405 - 2475 MHz
Channel 1 - 15
Setting: Auto / Manual
0000 - 9999
Setting: Manual
Approx. 30 m / 98.4 ft.
Up to 5 groups (A - E)
* Sender units are set to Group A
Up to 15
* Secondary and additional units serve as sub-senders
Up to 15
Supported
Supported
Supported
Optical pulses
Channel 1 - 4
From front of flash head
• Indoors: 0.7 - 15 m / 2.3 - 49.2 ft.
• Outdoors: 0.7 - 10 m / 2.3 - 32.8 ft.
• Horizontally: 45°
• Upward: 27°; Downward: 20°
Up to 3 groups (A - C)
Unlimited
Unlimited
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