How to make a Blue/Green Screen

J

joelu

Member
i tried to search this board, it comes thousands of threads contains blue/green keywords, makes me hard to get the topic i want

my question is simple, with low budget, what is the cost effection way to home-made a blue/green screen. with home depot or similar store.

if there's a link about my question, please give me that link

thanks in advance
 
I made one a few years back - nothing for professional work, but when I was in high school I used to do little effects pieces. I went to a discount fabric store, and was lucky enough to find a huge supply of neon green cloth, onto which I attached hooks. Now it comes up and down easily, and works relatively well. I liked having the cloth because it didn't require me to devote a section of my house to being neon green 100% of the time, and it easily drapes over props as well. And the kind of material I got absorbes light pretty well, too.
 
talking about green cloth in fabric store, is there any different kind "Green" i need to choose? or simply ask them "pure green" cloth? or as mike points out "Neon Green"? sorry but i'm just a bit confused about names of color.
 
I'd say look around and see what greens they have to choose from. Then go with whichever looks like it's the most "pure" in color. Technically it doesn't matter all that much as you can key any color. Still, it's best to get a nice bright saturated green.

Dan, I know what you mean! Actually I've been looking around for some more green cloth myself. The problem is that the green I selected seems to be rather rare (well it IS ugly). I really don't want to purchase a different color green to combine with the old stuff but I may have to.
 
We had a greenscreen news stage in High School. We did it by taking some rather large sheets of a styrofoam(sp?)-like substance and painting them chroma green.
 
Essentially, what you want to have is a highly reflective green colour, that will reflect back the green, giving you an even colour throughout the backdrop for keying. You don't want it to be shiney, because that will not give you an even backdrop.

Any colour technically works, but I've heard when shooting video green is best, because the video cameras take in green the easiest. It gives you a cleaner key, all other things being equal.
 
I'm not entirely sure highly reflective is the right term. As you mentioned, you don't want it to be shiney. :)

What you need is a "lembertian surface" or one the diffuses light evenly.
 
you can get gallons of green and bluescreen paint from a theatrical/lighting supply place. i believe roscoe makes it. can't get any easier than that.
 
I picked up a bunch of green cloth at a fabric store. I was looking through and found some stuff that my girlfriend described as "a color that doesn't exist in nature." That's when I knew I had the right stuff.:)
 
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