Power, connectivity, and reliability, the Canon Speedlite EL-1 is an on-camera E-TTL / E-TTL II-compatible flash characterized by its flexibility to suit a variety of lighting needs. Featuring a xenon flashtube, greater exposure stability is possible along with a powerful guide number of 197' at ISO 100 and versatile exposure control from full 1/1 power down to 1/8192 power. Also distinct, the EL-1 utilizes the LP-EL rechargeable lithium-ion battery pack to promote shorter recycle times of around 0.9 sec, approximately 335 flashes per charge, and it contributes to improved thermal management and the flash's active cooling system.

The EL-1 fully supports EL-series RT flashes via its built in radio trigger and receiver. It can trigger up to 15 RT-series receiver Speedlites to produce light freely even when not attached to the camera. For even more creative possibilities, the EL-1 features Second-Curtain Sync.

The flash has a rugged physical design equivalent to the dust and water-resistance of the EOS-1D-series camera bodies. Its improved user interface incorporates an updated joystick design, display, and control layout and it features a tunable LED modeling lamp to help previsualize the lighting. Additionally, the flash head can fully swivel 180° left and right, bounce upward 120°, and it includes a built-in wide panel.

2.4 GHz Wireless Radio Transmission    Compatible with Canon E-TTL / E-TTL II    Guide Number: 197' at ISO 100 and 200mm    Zoom Range: 24-200mm    Bounce: +120°    Rotates Left & Right 180°    Xenon Flashtube, 1/1 to 1/8192 Power    Weather-Sealed, Active Cooling System    Bounce Adapter & Hard Color Filters    Runs on LP-EL Lithium-Ion Battery

Related Questions and Answers

Q: 1. Will these work with any of the 5d mark ii, iii or iv series?

A: The Speedlite EL-1 is compatible with any of the 5D series of cameras.

Q: 2. Canon wireless

A: Yes, if you use the Canon Speedlite Transmitter ST-E3-RT (Ver. 2) on the hot shot of a canon camera you could use this flash off camera as long as the camera shoe is 5 pin. The new multifunction hot shoes may require an adapter.

Q: 3. is this compatible with the Yongnuo YN-E3-RT II Wireless Speedlite Transmitter?

A: Canon does not comment on compatibility with third party triggers. And as firmware come up it could stop the third-party trigger from working. Best is to use one of these triggers, https://bhpho.to/3zxKbpI

Q: 4. Can the flash be remotely triggered using the Pocket wizard Plus lll ?

A: Yes you can but you would need another pocket wizard to connect to the sync port on the Canon EL-1, but then you can trigger it remotely with the Pocket Wizard Plus III.

Q: 5. Is this flash compatible with the ST-E3-RT Speedlite Transmitter and EOS 1Dx Mk III? Is the transmitter needed with this camera?

A: Yes, this works with the STE3RT and the 1DxIII works directly without a transmitter.

Q: 6. Will Canon also release a new upgrade transmitter along with EL1?

A: As of the date/time of this reply, Canon has not announced a new wireless radio transmitter. Canon states that the Canon EL-1 Speedlite Flash is compatible with Canon's RT wireless radio transmission system, and as such, would be compatible for use with the current Canon ST-E3-RT Wireless Radio Transmitter, as well as the Canon 600EX II-RT, 600EX-RT, and the 430EX III-RT Speedlite Flashes for wireless radio triggering usage needs.

Q: 7. Does anyone know how to activate the modeling lamp for remote EL-1's? I've tested between two EL-1's and hitting the Lamp button only activates the modeling lamp on the speedlight you pressed the button on.

A: The only way to be able to activate the modeling lamp on both of the EL-1's would be to use the Canon transmitter and control both from there. But sadly from testing, there does not appear to be any way to turn the modeling lamp of an EL-1 on from another EL-1.

Q: 8. Will this flash fire off the ad200Pro?

A: Yes, the Canon Speedlite EL-1 can set off any other flash that has an optical slave. The AD200pro has an optical slave. But the AD200pro will be only manual and not have High speed sync. And you will not be able to change the power on the AD200pro from the on-camera EL-1.

Q: 9. Do this flash Is it controllable wirelessly by the flash 430EX III-RT?

A: Yes, the 430EX III RT will communicate with the EL-1.

Q: 10. I can't figure out how to get the IR beam activate with any flash I currently own with the Canon R5. Is it neccisary to use this flash in order to get the beam in a dark room?

A: Unfortunately, infrared auto-focus assist beams will not trigger or work in tandem with mirrorless cameras. This is unfortunately a limitation of mirrorless technology.