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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 04 Jul 2011 (Monday) 20:49
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Lastolite triple flash bracket question

 
kaydawgy
Member
160 posts
Joined Jan 2010
     
Jul 04, 2011 20:49 |  #1

So I just purchased this so I can attach 3 Yongnuo 560 speedlights to it with a 60 inch shoot through umbrella. I just wanted to see if my calculating this correctly. I have all flashes set to 1/4 power which reselts in awesome recyle time. Which means that Im shooting ALMOST at an equivalent of Full power for a single speedlight?


Canon 7d gripped, Canon 550d gripped, Canon 17-55mm, Canon 50mm 1.4, Canon 28-135mm, Tokina 11-16mm, Sigma speedlite DG-ST 530, Yongnuo 560 (x2) and 460
http://www.huffakerpro​ductions.com (external link)

  
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ukcyberboy
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613 posts
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Location: Liversedge
     
Jul 05, 2011 03:21 |  #2

by my calculation 1/4+1/4+1/4 would be 3/4, so I would say meter the light that you get from one at full then from what you tried there.


Body | Canon 6D |
Lens | Yongnuo 50mm 1.8 |
Lens | Canon 28-70 2.8 L |
Lens | Canon 70-200is F4 L |
Lighting | Yongnuo YN600RX |
Accessories | Various Bits |‚Äč

  
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KaBlookie
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Joined Sep 2009
Location: Phoenixville-ish area, PA
     
Jul 05, 2011 09:53 |  #3

Yeah, three flashes at 1/4 power isn't "almost" full power, it's 3/4 power. If those YN560s can do 1/3EV increments between power settings (which the 430EX-II can: it'll go 1/4, 1/4 +0.3, 1/4 +0.7, 1/2, etc.), then doing 1/4 +0.3 on all flashes will give you a theoretical total of full power.

If not, then your best bet is use them at 1/4 power and expose a bit to the right, or use them all at 1/2 power and expose a bit to the left. You could of course also experiment a bit with them, putting the two side flashes at 1/4 and the top one at 1/2. That would theoretically give you a total full power, but may result in slightly uneven output.


7D - XTi - Tamron 17-50mm f/2.8 - Canon 50mm f/1.8II - SMC Takumar 50mm f/1.4 - Canon 70-200mm f/2.8L - Lensbaby 2.0 - Canon 430EX-II - CBS flash trigger

  
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Dustman
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Joined Mar 2010
Location: New Jersey
     
Jul 05, 2011 13:44 |  #4

Yup is 3/4 power, not Full power.

I own the Lastolite Tri Flash sync, is that the one you have?

http://www.bhphotovide​o.com …ails&Q=&sku=741​846&is=REG (external link)

I love it, cause I can trigger all 3 of my 580 ex II's with just One(1) Youngou RF-602. I too use it to shoot into or through a 60'' umbrella. Love it!


www.DustinLevine.com (external link)

  
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Lastolite triple flash bracket question
FORUMS General Gear Talk Flash and Studio Lighting 
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