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Old February 1st, 2006, 12:03 AM   #1
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Lighting with Ultra

I would like to know the best and cheapes way of doing lighting for using the green screen. I did see something about tube lights but can not find it now.

Ayone with some suggestions please let me know.

jkerry@charter.net

Tks,
Jeff
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Old February 1st, 2006, 12:45 AM   #2
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I think this may be looking for. I haven't tried it but it sounds good.


http://www.digitalpostproduction.com...e.jsp?id=31427
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Old February 1st, 2006, 03:39 AM   #3
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Ultra 2 is pretty amazing....

Jeff - We did some tests using "Ultra" last week, where we took some really bad dark green cloth (it was all crumpled up). We lit it with 2 small Dedolights creating pretty bad shadows and then lit our head and shoulders shot about 3 feet from this background.... (yes... broke every rule in the book) Ultra 2 did an amazing job of dealing with it in less than 1 minute!
We just wanted to see how the software would deal with this.

We have been doing a lot of tests this week with various software and lighting set ups using "proper" green and blue screens for studio and location work - we have been looking at trying to get a very quick way of getting difficult interviews on location - hence the test above.

I am not advocating sloppy work, but it is very intersesting what you can get away with these days using the likes of Ultra and DVMatte Pro.

However - much will depend on the type of work you are doing.

Stu...
www.studioscotland.co.uk
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Old February 1st, 2006, 03:48 PM   #4
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I use fluorescent light.

Light the background seperately from the talent. you can use cardboard or whatever to keep any light from these spilling onto the talent. The goal for this part is to light your green screen exclusively and evenly.

Get the talent as far forward as you can from the background.

Light the talent with flo's too - they are not HOT and your talent will love you.

You can buy it all at home depot. Doesn't get much cheaper. Works extremely well.
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Old February 7th, 2006, 11:35 PM   #5
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Thanks for all the assistance. We be trying them out this week-end.

Jeff
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Old February 9th, 2006, 06:16 AM   #6
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We just used ordinary flourescents on cheap green cloth

Jeff,
We have been astounded at how forgiving Ultra has been. Go to:
http://nlemedia.com/Design.htm and click on the "Video" segment. It's all green screen. We are very pleased with the results.

Greg
nlemedia.com
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Old February 12th, 2006, 10:25 PM   #7
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The "key" to ultra is grabbing a few seconds of video prior to your subject entering the sreeen. This allows the system to "read" the background including all its imperfections. The other thing is to make sure your camera exposure and settings are on manual so nothing changes after your subject enters the the screen.

As far as lighting, if you can swing it, the system benefits from three or more light sources. Ideally, a mainlight light offset to one side, a fill on the other somewhat spatially higher, a back/hair light setting the subject off from the backgraound and at least one wide backdrop light. This will give you outstanding results. Lighting is critical in keying!
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