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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 02 Oct 2008 (Thursday) 10:41
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Octabox Questions...

 
jbrown7815
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Oct 02, 2008 10:41 |  #1

First, would my 285HV work well with a AB Large Octabox? http://www.alienbees.c​om/foldable_detail.htm​l (external link)

Next, how does setting up a octabox/softbox work with a lightstand?

Is it the same as an umbrella? Or do I need something different?

Basically, can I buy the octabox and use it with my current lightstand/swivel?


Thanks :)


~Jesse~

  
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2112
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Oct 02, 2008 12:07 |  #2
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jbrown7815 wrote in post #6423193 (external link)
First, would my 285HV work well with a AB Large Octabox? http://www.alienbees.c​om/foldable_detail.htm​l (external link)

Next, how does setting up a octabox/softbox work with a lightstand?

Is it the same as an umbrella? Or do I need something different?

Basically, can I buy the octabox and use it with my current lightstand/swivel?


Thanks :)

I am not sure how well it would work. I can tell you that to get the amount of light I want using that octabox, I need to have my 320w/s light at half power or more. Thats more light than a flash puts out. It has a speedring that attaches to the front of the strobe. Not sure how you set it up for a flash.


40D,Tamron 28-75 f/2.8,Nifty Fifty,Vixia HV30 HD

  
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TMR ­ Design
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Oct 02, 2008 12:58 as a reply to  @ 2112's post |  #3

Hi jbrown7815,

I'm not sure about the efficiency of your octabox but I can tell you this...

I use a Nikon SB-800 Speedlight which I believe has a slightly lower guide number than a Canon 580EX(II) and I have no trouble using a Photoflex 36" x 48" softbox, achieving apertures of ~f/8 at a distance of 6 feet from the subject and ISO 100.

If you need to shoot at greater distances or want to work at smaller apertures without raising the ISO then you're going to need more firepower but if your camera performs well at ISO 400 and/or you are working on tighter shots then you'll be fine.

Once you want a large light source at 6 feet or more, for full length or group shots, then you're really going to want to use more than a Speedlight or small flash. A studio strobe will make much more sense, and as 2112 indicated, he is using a B800 (320ws) at half power to get the numbers desired.

As far as I know, unless you want to rig something or or do a DIY, there is no practical way to attach or mount a small flash to a PCB octa or square softbox. If you're not using the foldable boxes you can opt to use a third party speedring or bracket assembly to mount a small flash to a box, but that also has its limits and will not work well with a large box.


Robert
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jbrown7815
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Oct 02, 2008 17:11 |  #4

TMR Design wrote in post #6424012 (external link)
Hi jbrown7815,

I'm not sure about the efficiency of your octabox but I can tell you this...

I use a Nikon SB-800 Speedlight which I believe has a slightly lower guide number than a Canon 580EX(II) and I have no trouble using a Photoflex 36" x 48" softbox, achieving apertures of ~f/8 at a distance of 6 feet from the subject and ISO 100.

If you need to shoot at greater distances or want to work at smaller apertures without raising the ISO then you're going to need more firepower but if your camera performs well at ISO 400 and/or you are working on tighter shots then you'll be fine.

Once you want a large light source at 6 feet or more, for full length or group shots, then you're really going to want to use more than a Speedlight or small flash. A studio strobe will make much more sense, and as 2112 indicated, he is using a B800 (320ws) at half power to get the numbers desired.

As far as I know, unless you want to rig something or or do a DIY, there is no practical way to attach or mount a small flash to a PCB octa or square softbox. If you're not using the foldable boxes you can opt to use a third party speedring or bracket assembly to mount a small flash to a box, but that also has its limits and will not work well with a large box.

So what softbox works with a hotshoe flash? :)


~Jesse~

  
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SnlpeR
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Oct 02, 2008 18:18 as a reply to  @ jbrown7815's post |  #5

i tried putting two sunpak 383 inside a 4ft octabox last night
they were pointed right thru the speedring
and i noticed the light spread wasnt very good...it was more concentrated towards the center of the front diffusion panel

im gonna try putting both 383s in a V angle while inside the speedring to see if i can get an even more light distribution




  
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TMR ­ Design
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Oct 02, 2008 18:24 |  #6

jbrown7815 wrote in post #6425649 (external link)
So what softbox works with a hotshoe flash? :)

Well, for instance, as I've said in many other related threads, I use a Nikon SB-800 with the flash head set on 24mm and I fire into a Photoflex 36" x 48" box and get even light left to right and top to bottom without any problem at all. If the flash does not give you the ability to adjust that angle and is fixed at a longer zoom setting then it won't be even light. If I change the setting to anything over 50mm the light is not even. At 24mm it's the most even, and quite usable at 35mm with some falloff at the edges.

When I use the smaller 24" x 32" box I get wonderful soft light from center to edge and edge to edge and I'm never at a loss for power.

I generally shoot at the base ISO of my Nikon camera which is ISO200 and I'm not afraid to go to ISO400 to get more efficiency as well as increasing battery life and faster recycle times.


Robert
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MD ­ Steelerfan
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Oct 05, 2008 08:14 as a reply to  @ jbrown7815's post |  #7

The Westcott Apollo Softboxes work for hot shoe flashes. I just got the 28" x 28" one for my 580 and I will test it soon.


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scorpio_e
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Oct 05, 2008 09:05 |  #8

MD Steelerfan wrote in post #6440761 (external link)
The Westcott Apollo Softboxes work for hot shoe flashes. I just got the 28" x 28" one for my 580 and I will test it soon.

I think you would be fine with this. It worked great for the author producing the one light DVD.


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TMR ­ Design
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Oct 05, 2008 10:56 as a reply to  @ scorpio_e's post |  #9

The Westcott Apollo softbox is very nice and Zack does some great stuff with it. The only thing I don't like about it that you have to keep going inside the box to adjust the power level of the flash. I prefer to use a softbox that allows me to fire the flash into the box and still have access to the controls. The Photek Softlighter II is a great choice for that and you get nice round catchlights as well, which I feel are more natural when shooting outdoors. I like square catchlights indoors where it would make sense to replicate window light but outdoors I would rather create catch lights that mimic the sun and its reflection.

It's too bad that the Wescott Halo Mono is not better suited for Speedlight's of they would be a great choice.


Robert
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