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Extending arms or aim strobes outwards?

strobe arms technique angles

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#1 siltfilmer


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Posted 17 January 2019 - 03:06 PM

Reading through the forum I found two approach how to avoid backscatter in murky water for WA:

  1. extending arms to increase camera-strobe-distance
  2. using fairly short arms but pointing the strobes outwards to just feather the object with the edge of the light beam


I am still early in my underwater photography journey so I am interested in:

  • What is the preferred method?
  • Is there - besides the setup- any significant difference in the results?


I would assume that using long arms is most effective, but if there is no difference I would prefer the more compact setup :)

#2 ChrisRoss


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Posted 17 January 2019 - 05:27 PM

In general you extend the arms as your subject gets further from the camera, one rule of thumb I've seen is the strobe separation = subject to dome distance.  Pointing out can fine tune this.  There's lots of online tutorials on strobe positioning to look at.  I would say minimise backscatter rather than avoid, any particles right next to your subject will also be illuminated for example.  You also want to get the strobes back behind the dome particularly with a fisheye as the lens will be in focus on particles right next to the dome and the is a danger of producing flare.

Also tagged with one or more of these keywords: strobe, arms, technique, angles