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How external Flash works as slave. 420ex & 430ex

Usaf
Apprentice

Camera Canon 40D

Speedlites Canon 420ex & 430ex.

 

how I can use these two speedlites as slave with Canon 40D without Flash a tigger. Do the camera pop-up work as Master flash or is there any other way?

2 REPLIES 2

cicopo
Elite

You can't trigger them with the built in flash unless you add slaves to trigger them. The 420 & 430 EX are triggered remotely by an infrared signal, not just a flash. These can trigger them just because it sees a flash occur.

 

http://www.bhphotovideo.com/c/product/774432-REG/Dot_Line_DL_0129_Slave_Flash_Unit_with.html

 

or

 

http://www.bhphotovideo.com/c/product/858969-REG/Photogenic_913667_PG750_Slave_Trigger.html

 

http://www.bhphotovideo.com/c/product/764705-REG/Nisha_FSU_Flash_Slave_Unit.html

 

However they can't control the output as they are just a triggering device.

"A skill is developed through constant practice with a passion to improve, not bought."

Mykolas
Authority

Hi Usaf,

 

Adding to what was said above, we have our own device that can trigger your Speedlite 420EX and Speedlite 430EX.  It is the Speedlite Transmitter ST-E2.  This mounts to the hotshoe on top of the camera.  When you take a picture, the camera sends a signal to the transmitter, which sends a signal to the flashes to trigger them.

 

On some of our newer camera bodies that have a built-in flash, the flash on the camera can function as a master.  However, this was a newer function that was not available on the EOS 40D.

 

If this is a time sensitive-matter, additional support options are available at Contact Us.

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