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DPChallenge Forums >> Hardware and Software >> External Flash question
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Showing posts 1 - 11 of 11, (reverse)
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10/21/2011 05:47:06 PM · #1
So I finally got my first external flash (Canon 430EXII) for my canon 40D. I haven't had any difficulties using it when it's mounted, but I have a (maybe stupid) question about using it as a slave. I was under the impression that you could wirelessly sync it with the camera. My main question is: Can the built-in in my 40D flash act as a master to the speedlite and if so how do I sync them? I also read that the speedlite can only be used as a slave so if I get other external flashes in the future, will I have to get something other than the 430EXII to act as the master?
10/21/2011 05:52:00 PM · #2
I believe that is on the 7D and maybe some of the newer rebels - not sure about them. Not on the 40D.

Edit: If you had a 580/550 on the camera or the ste2 they can act as master to the 430.

Message edited by author 2011-10-21 17:53:00.
10/21/2011 05:54:00 PM · #3
is there a way to connect them via wire? I don't see a port I could use though :/
10/21/2011 06:09:57 PM · #4
Originally posted by Blue Moon:

is there a way to connect them via wire? I don't see a port I could use though :/


Yes, but only on manual. The wired connection would only serve to trigger the flashes to go off, there would be no E-TTL. Your camera should have a p/c connection on it then you need a p/c cable to a shoe for your remote flash
10/21/2011 06:10:50 PM · #5
Originally posted by Blue Moon:

is there a way to connect them via wire? I don't see a port I could use though :/


ettl cord
10/21/2011 06:10:53 PM · #6
well....damn
10/21/2011 06:11:10 PM · #7
Originally posted by robs:

I believe that is on the 7D and maybe some of the newer rebels - not sure about them. Not on the 40D.

Edit: If you had a 580/550 on the camera or the ste2 they can act as master to the 430.


What Robs said. I'll just add that you can also use third party triggers such as the Pocket Wizards, Radio Poppers etc. The radio triggers are better in general for outdoors because the Sun can interfere with the optical triggers from the 7D and STE2. I predominately trigger my 580EX II with my 7D indoors and haven't had any problems. In fact it works great. You can also find some lower cost triggers online that may not provide full E-TTL functionality, but work well in manual. In addition many users find low cost triggers on Ebay.

I believe in addition to the 7D having the built in trigger, the 60D and 600D do as well. Look up the specs to be sure though because I'm not 100 percent positive. The higher end Canon line such as the 5D and 1D series don't normally have a built in flash so an external solution would also be necessary. I haven't read the full specs of the pending 1D X yet so check that out as well. They packed some new features into that camera so look to see if that can trigger.

Dave
10/21/2011 06:22:00 PM · #8
Originally posted by apercep:

Originally posted by Blue Moon:

is there a way to connect them via wire? I don't see a port I could use though :/


ettl cord


That will move the external flash off camera, but I don't think it will let you fire the external flash AND the built in flash at the same time.
10/21/2011 06:32:03 PM · #9
Originally posted by Spork99:


That will move the external flash off camera, but I don't think it will let you fire the external flash AND the built in flash at the same time.


correct.
10/21/2011 07:52:23 PM · #10
I was more thinking that the built-in flash was more of a trigger for the external one, I didn't expect/want it to fire simultaneously
10/21/2011 08:10:04 PM · #11
Originally posted by Blue Moon:

I was more thinking that the built-in flash was more of a trigger for the external one, I didn't expect/want it to fire simultaneously


With the 7D flash you can set it to just act as a trigger, or you can also have the flash fire to add fill flash. Adjusting the output flash level balance between the two is also possible. For instance you can have the camera flash be your main flash with just a low fill output from the external flash or visa-verse. Even when you just use the 7D camera flash as the trigger without the desire to add light to the exposure you can still see a slight pre-flash that doesn't add to the shot since it's so fast...so don't let that throw you off when you have it set to fire the slave only.

Dave
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