Alley in Pisa, Italy

by Lars Kotthoff

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I have a Canon 430EX flash and an iPhone 5. I really enjoy the quality of the camera in daylight, but of course in low light conditions the built in LED flash is quite poor. So would it be possible to use an off camera flash such as the one I have to provide additional light for the camera? I would prefer to use this in practice and not just for theoretical purposes.

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2 Answers 2

You can use an optical trigger app in your iPhone. This reverses the roles, the iPhone takes a picture when you fire your flash.

The one app I know that does this is iSyncFlash.

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I know with the 430ex II I can set it to manual and wireless and the flash from the camera will trigger the speedlite. Just give it a shot.

Here's a video where one of the cheapest cameras was used with a 430ex II: http://www.youtube.com/watch?v=zh6zr3wKRV0

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Very nice link @tenmiles. My brother used to have that p&s.... –  Francesco Oct 7 '12 at 8:42
    
Do we know what settings he used on the 430 EX II for this? I have that flash and an iphone, and am very interested!!! :) –  Mike Oct 9 '12 at 9:03
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I don't think it will work with the iPhone, though, because it has an LED rather than a proper flash. –  mattdm Oct 12 '12 at 2:45
    
@mattdm - You are correct. There are two issues with this answer. First of all the 430EX does not have an optical sensor(unlike the Nikon flash used in the video linked to). And secondly all of the smart phones I have tested do not seem to trigger flashes optically. What exactly the reason is for that I'm not sure but in any case it doesn't work. –  dpollitt May 29 at 3:23

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