Numpty after help

Studio Photography, Flash, Daylight and Studio Lights, Flash equipment and use
  
6 Dec '11 Tue Dec 06, 2011 17:01    
SteveEveritt
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Post Numpty after help

I have only recently ever used a proper flash and picked up one of the Sigma EF-610 DG ST when SRS were doing a deal a coupe of weeks back. My problem... When it is mounted on the K-7 with the Sigma 70-200 attached and the camera is set to multiple shots the flash fires with every shot, but when I mount my DA* 16-50 it flashes every now and then, certainly not for every shot. Any ideas?

 
 
 
 
  
6 Dec '11 Tue Dec 06, 2011 18:05    
thoughton
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Post Re: Numpty after help

First thing I would check for would be a firmware update for the flash. No experience of Sigma, but Metz have been quite good about updates.


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6 Dec '11 Tue Dec 06, 2011 18:38    
SteveEveritt
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Post Re: Numpty after help

Manuals for Sigma, Canon and Nikon no Pentax. No firmware that I can find either. Wish I'd got a Metz now ¦0(

Steve

 
 
 
 
  
6 Dec '11 Tue Dec 06, 2011 18:53    
Anvh
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Post Re: Numpty after help

You sure the flash was charged?
With the 70-200 the falsh is more focused so less energy is used per shot, depening on the distance off course.
With 16mm it needs to lit a lot more.

 
 
 
 
  
6 Dec '11 Tue Dec 06, 2011 23:19    
SteveEveritt
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Post Re: Numpty after help

I see, that makes sense. With the wide angle it requires more energy per discharge to light up a larger area, whereas at 200mm it needs a smaller amount of light as the lens is concentrating on a more precise and smaller area. Thanks Anvh. Very Happy Very Happy Very Happy

 
 
 
 
  
6 Dec '11 Tue Dec 06, 2011 23:38    
cardiff_gareth
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Post Re: Numpty after help

True but if the subject is further away then the flash will need a more powerful flash output to illuminate the subject. Sounds to me like the flash wasn't fully charged and so not firing for every shot


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