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Can I use tulle to keep backgrounds from overexposing?
Old 01-12-2007, 06:21 PM   #1 (permalink)
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I heard a photographer mention using tulle as a diffusion material like a neutral density filter but instead of going over the lens he said put it up like a scrim behind the model to cut down background light so it wont overexpose.

Will this work?
Is this tulle the same material as scrim jim diffusion fabric?
Would it affect the color balance?
Wont it tear and rip very easily?
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Re: Can I use tulle to keep backgrounds from overexposing?
Old 01-13-2007, 01:58 AM   #2 (permalink)
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Tulle will work as a diffusion material. Scrim jim diffusion fabric is more or less the same stuff, but Westcott takes the guess-work out of using the stuff by telling you how much it cuts the light output. They select the fabric for properties of interest to photographers/videographers.

Tulle (and illusion, another fabric with a tighter weave) may or may not affect the color balance, depending on the properties of the material it is made from. I assume you mean the white and/or black colored variants. Other colors would of course affect the color balance to some degree. It does not tear or rip easily. It will sometimes snag on things, due to the open weave, but it's pretty durable stuff. I shot a series in what amounts to a wind tunnel and it held up fine.



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Re: Can I use tulle to keep backgrounds from overexposing?
Old 01-13-2007, 08:52 PM   #3 (permalink)
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If I were to build my own scrim with black tulle how should I go about building it?

I was thinking 2 light stands that extend up to 9 feet and using 5 clamps per side. At the base a 3 way connector with (2) sandbags on each foot. I would just clamp 9x9 foot tulle squares to the posts. I'd use a white ripstop nylon diffuser to soften the light from 1 side and a (if need be a silver reflector on the other side for more pop).

The tulle would be cut in 9x9 foot squares and I'd staple and glue them together. I wanna make a single layer square a double layer square and a triple layer square.
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Re: Can I use tulle to keep backgrounds from overexposing?
Old 01-14-2007, 02:07 AM   #4 (permalink)
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I'd build frames and clips out of PVC and clip the fabric to the frames . For info on how, check out the Tinker Tubes PDF file found here: http://www.software-cinema.com/page/tinkertubes

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Re: Can I use tulle to keep backgrounds from overexposing?
Old 01-16-2007, 03:43 PM   #5 (permalink)
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Originally Posted by ChipBulgin View Post
I'd build frames and clips out of PVC and clip the fabric to the frames . For info on how, check out the Tinker Tubes PDF file found here: http://www.software-cinema.com/page/tinkertubes

-Chip
Shall I ask 1 last question... would PVC be a good material to use to make a 9x5 foot white ripstop nylon overhead diffuser?
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Re: Can I use tulle to keep backgrounds from overexposing?
Old 01-16-2007, 04:29 PM   #6 (permalink)
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I've built a 10X10 out of PVC and it works great, but you have to have 0 wind to use it. Weight bags on the stands will hold it in a light breeze, but the PVC starts to flex a a lot if you don't have supports in between the outer tubes.
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Re: Can I use tulle to keep backgrounds from overexposing?
Old 01-16-2007, 04:37 PM   #7 (permalink)
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Originally Posted by gaborm View Post
I've built a 10X10 out of PVC and it works great, but you have to have 0 wind to use it. Weight bags on the stands will hold it in a light breeze, but the PVC starts to flex a a lot if you don't have supports in between the outer tubes.
Thanks man... you just solved the Matrix for me!
All I have to do is watch out for wind and dont worrie about anything else! I plan to make it out of the heavier pvc and have each section in 4.5 foot pieces all internally tethered together with bungee cord!
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