Canon 580exii speedlight, I want to only use the slaves, but they won't fire when I turn off the master

You need to set the flash to slave and the same channel as the master. If the flash doesn't have this function it may be able to be fired optically. Set the master flash to low power and set the off camera flash to optical.

This video on youtube explains how to setup and use the 600 RT as a master. I do a lot of shooting with master slave, but my equipment is Nikon. Your gear is an excellent choice making it possible to shoot with remote flash. Canon 600ex rt Step by Step Setup Guide

Bruce,
Try these steps:
1. Set camera to manual2. Set shutter to 1/60
3. Set aperture to F5.6
4. ASA/ISO 200
5. 550EX on hotshoe
6. Do not set on slave or master
7. Turn on flash


Display must shows, ETTL.
If that doesn't work, you have to use the flash on manual.
Some of this model will not work fully on ATG Canon EOS-1D C, ATG Canon EOS-1D X IR, Canon EOS-1D X/60D/T4i because this flash is over 20 years old.


Unless you would want it to be modified by me.
But that can be costly when you can get the 580EX II for less than $425.00 USD.


[email protected]

The Canon Speedlite will work, but you won't get the full functionality of a Nikon Speedlight. Most importantly you won't get the through-the-lens metering.

It is not possible to use the Nikon SB-50DX directly on a Canon EOS Rebel camera. The Nikon flash gun hot shoe contacts do not match the Canon hot shoe contacts.
You can use the Nikon as a slave flash gun with a PC flash cord that matches the Nikon's flash contacts then connect the end of this flash cord to a flash trigger. The Canon's flash can then trigger the Nikon flash gun via the flash trigger.

Make sure the slave is far enough in fornt of the master flash to see it. If the two flashes are next to each other then the slave is not seeing the master signals.

check Custom Functions of Camera and Flash it can be turned off in both locations

From what I've experienced the slave need to be set to B-1. Don't know why.

The EOS 40D does not have a transmitter built in. The remote flash units must be set to "Slave" and the on-camera external flash unit (eg Speedlite 580EX) or transmitter (ST-E2) set to "Master". Note that the Speedlite 430EX doesn't have the function to act as Master and you need a minimum or the 580EX or a ST-E2 speedlite transmitter (or similar) as Master/s.

Hi Joelgue,

Now, go to a real camera store and bring your equipments with you.

Say to them:

I have a Canon 580EX Flash and wanted to know if you have the Quantum Turbo Battery with the Adapter Cord for my 580EX?

Ask to see if you can test them out.

This adapter does not go into the 4AA battery hold but to the flip out cover, AC Adapter. You need to plug it into the flash.

Press "On" from the Q battery, then set flash to "Master" on camera and other EX to "Slave".

Turn all three on(1st flash, 2nd flash and camera.

Do not press shutter button but press the pre-flash(pre-auto lock/flash) on camera body. On the EOS-1Ds Mark III has "*".

Both flashes should come on.

Now, press the camera shutter using "ETTL Modes" and look at the image from the LCD screen...is exposure correct?

Address to this address from now, please: [email protected]

PS: You did set both flashes into same channel and with no exposure adjustment, right?