6D, 600EX-RT with 320EX as slaves

[triple]

I am interested in using 320EX as slaves to the 600EX-RT for taking interior real estate photos. As the rooms get larger, smaller, just add or subtract 320EX as needed. Does this make sense?

[triple]

Thanks for the tip, but I could not wait!

Just bought the Canon Speedlite 600EX-RT @ Royal Photo in Montreal for $527 + tax.

First reaction in auto mode, it's fast to focus, fast to recycle with 24-105mm on the 6D.

[digital]

With that price it loos like you got the $70 rebate and the base price is lower @ Royal Photo so it would have been about the same since you had to pay both taxes as opposed to one in Alberta.

[triple]

Price is available 'til the end of the month as well.

Service was first class.

[digital]

Already bookmarked 

[5008cooper]

I have a ST-E3-RT mounted on my 6D to remotely trigger my 600EX-RT flash, it works easy.  I also have a 320EX which I'd like to use as a slave but I can't figure out a way to link it with my (ST-E3-RT)+(600EX-RT) set up, any advice  on how to make it work?

Thanks,

[digital]

You can't link it. It has no radio transmitter (RT). It can't be used as an otptical slave either. While Canon's RT system can do either, it can only do one at a time, either optical or radio. Optical won't worked either because the ST-E3-RT does not have a flash to fire an optical signal. You can only fire it oprically from your 600RT which you woulld have to set to optical mode but then you can't use the ST-E3-RT.

You might be able to run a wire from the 600 RT or ST-E3-RT to trigger it. The other option is buy optical slave sensor which which attaches to the 320. Very inexpensive. It detects when flash fires and will itself fire. No ETTL or any control except the power level you set which you will have to do manually.

Contact this person by email. Very helpful.      

[Mod note: Removed per FORUM GUIDELINES]

The only way to do this properly is get another RT flash and you will have it all. ETTL, group mode and you can control everything from the ST-E3-RT. Canon has come out with the 430 EX.   

NOTE:  You can't use 3rd party radio transmitters. Not comaptible with Canon's RT system.      

[5008cooper]

Thank you very much, Digital.

Your information is very useful to me, after your advice, I also get more advice from the Canon technical support reps and I tried below:

I can only use the ST-E3-RT to remotely trigger the 600-E3-RT flash, but not the 320-EX flash because they are on different frequency.

I could use the 600-EX flash, mount directly on my 6D,  set as master, then trigger remotely the 320-Ex, set as slave. it worked.  However, the ST-E3-RT is not used in this case.  If I use the ST-E3-RT, which is set as Master, then my 600-EX flash has to be set as slave, then it won't be able to trigger another slave (320-EX).

just to put the information for the others in case they are in same situation.  in order to make both the 600EX and 320EX work as slave, I need to make some other arrangement as you said.

Appreciate your help very much.

[digital]

NP. You get stuck in that Optical to RT transittion world. Other options is getting less expensive Canon compatible 3rd party RT fllashes. There are two out there now and I'm not sure I should be saying this on a Canon site.

I went from a Canon 580 EXII. 580 EX, Yongnuo 560 and PC Bluff triggers to and ST-E3-RT and 3 x 600 RT's. I love it and never loojed back even if it hurt the budget a bit.     

[TCampbell]

---

@5008cooper wrote:

I can only use the ST-E3-RT to remotely trigger the 600-E3-RT flash, but not the 320-EX flash because they are on different frequency.

I could use the 600-EX flash, mount directly on my 6D,  set as master, then trigger remotely the 320-Ex, set as slave. it worked.  However, the ST-E3-RT is not used in this case.  If I use the ST-E3-RT, which is set as Master, then my 600-EX flash has to be set as slave, then it won't be able to trigger another slave (320-EX).

---

The ST-E3-RT trigger can only trigger flashes that have an RT suffix in the name such as the 600EX-RT or the new 430EX III-RT.  The RT flashes use radio for communication and triggering.

Canon flashes that support either master or slave modes but do not have an RT in the name are optically triggered and require a visible line-of-sight between the on-camera trigger and the off-camera flashses.  

The 320EX can function as an off-camera slave, but it requires an on-camera optical master to trigger the flash.  The ST-E3-RT has no optical capabilities at all... only radio.  

The 600EX-RT actually supports both opitcal or radio technology but you have to pick a mode.  In other words if it is in radio mode it will not work as an optical trigger.   If it is in optical mode it will not work as a radio trigger.  Also the 600EX-RT can function as an on-camera master or as an off-camera slave.   So you could use a 600EX-RT if mounted on-camera and put it in optical master mode to trigger an off-camera 320EX which which would need to be in slave mode -- provided the 320EX has line-of-sight to the 600EX-RT.  The 320EX can only be a "slave" (it does not have "master" functionality).  

The wireless (optical) receiver is on the lower part of the 320EX unit (down near the "Canon" logo on the front).  This is the part that must be able to see the flash fire on the 600EX-RT.  Since the flash head on your 320EX can tilt or swivil, you can rotate the lower body of the 320EX to face the 600EX-RT but swivel the head of the 320EX to face the direction where you want the light.

If you want to be all radio-based (which is more versatile because you can hide flashes behind objects, install them inside soft-boxes, etc. and not worry about line-of-sight issues) then you could either get (a) another 600EX-RT or (b) get a 430EX III-RT as an off-camera flash.  The 600EX-RT flashes are more powerful.  I use a pair of 600EX-RT flashes with an ST-E3-RT trigger and do everything with radio; it's rock-solid reliability and fires every time.

[5008cooper]

Thank you very much, Tim.

You made everything very clear to me.  Next time I will get another 600Ex or 430-EX RT.

Appreciate it very much.