Questions about octo/brolly/boxes...
Stig said:Hi,
quick questions about octagonal modifiers, all the octobrollybox versions...
1, which way do you prefer the octobox to be lit up (and is there a difference)?
what I mean, I found basically the same shape/size octobox, but one has an umbrella like pole in the middle, closed back, the strobe sits behind the diffuser and aims back on a reflective inner back... the other has a hole in the back, with the strobe aiming at an (inner) diffuser screen (so it doesn't block the light and is naturally more accessible)
The answer to this applies to several of your other questions. The cheap brolly's aren't much more than a reflective umbrella with a diffuser on the end, where as the Octo is a more traditional soft box that you shoot through. As someone mentioned above, it comes down to portability, setup/tear down time. The brollys setup almost as quick as an umbrella; I never take my softboxes apart, it takes too long. If I travel, I use the brolly. At home, I prefer the softboxes, because my flash is accessible at the back.
As far as light quality, they're essentially the same. I'm sure it varies by manufacture. but I was surprised to find that mine attenuate the light about the same. Technically my brollyboxes have better light, in that there is less of a hotspot in the center. But the only time I see this is in spectral highlights, and it's rare that the highlight is big enough to be noticeable. Even if it is, it takes 2 seconds in Photoshop to fix it. I see no difference in the softness, though I find the boxes to feather a bit better. I use cheap softboxes (Fotodiox, really well made for the cost) and cheaper brollys (cheapest I can find).
The effect of different shapes/sizes depends on your subject. Softness is a relative term, dependent on the size of your light vs size of your subject. I wouldn't worry too much about shape to begin with. Photographers that like dramatic lighting often have various sizes and shapes so you can really control your lighting relative to your subject, or a specific shape to catchlights and spectral highlights. Just get a couple of rectangles to start with - they work well with speedlights, easy to manage, and feather well.
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