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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 20 Jul 2007 (Friday) 14:16
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430ex and 580ex II question

 
Vermin87
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Jul 20, 2007 14:16 |  #1

I know that on the Sigma Super, after 10 full-power shots, the manual suggests letting the flash cool for 10 minutes.

Is this true or is there something similar with the Canon line of flashes also?


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DavidW
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Jul 20, 2007 14:47 |  #2

Yes - the Canon 580EX manual says that you should let the flash cool for 10 minutes after firing 20 continuous flashes (or using the 'modelling light' facility 10 times).

If you're careful, particularly if you're not using the flash at full power, and you're not firing rapid bursts, you don't need to stop shooting every so often to let the flash cool. However, if you go too mad, you can damage the flash.


I've heard it said that Quantum Qflash heads don't have any requirement to be left to cool down no matter how fast you're firing them. I own a Qflash X5d-R as well as my 580EX, and the Quantum kit is much more heavy duty. However, there's a huge price, weight and bulk difference.

David




  
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Vermin87
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Jul 20, 2007 14:53 |  #3

Oh okay, thanks DavidW. How about the 430ex?


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DavidW
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Jul 20, 2007 15:08 |  #4

The 430EX manual lists exactly the same restrictions as the 580EX manual. I'd expect all small shoe mount flashes to have similar restrictions - there just isn't the room for heavy duty enough components and sufficient heat dissipation to lift the restrictions. In particular, the flash tube in a 430EX or 580EX is surrounded by a reflector and other stuff - whereas a Qflash tube is potentially in the open, and if closely confined is likely to be confined in something metal.

David




  
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430ex and 580ex II question
FORUMS General Gear Talk Flash and Studio Lighting 
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