Green Screen Tutorial: How to Light A Green Screen


Uploaded by videomaker on 24.08.2009

Transcript:
bjbj [Music Playing] Male: Utilizing a green screen for your productions can help raise
the values of your video shoots. It s gonna take us four simple steps. Step number one,
we re gonna take a look at some simple best practices and some preplanning that we can
do when utilizing a green screen. Step number two, we re gonna take a look at how to light
our subjects. Step number three, we re gonna light our green screen. And step number four,
we re gonna put the elements together and create our illusion. I m Tom Skowronski and
this is Green Screen Lighting. Step number one is gonna be our preplanning process. We
re gonna utilize these three Hollywood soft lights to help light our subject and to also
light our screen and we re gonna use this light, our soft box light, as our main key
that s gonna provide the biggest source of illumination to that scene. Now, the other
thing we need to pay attention to is that the imaging sensor in these bad boys here
is much more sensitive to green rather than red or blue. Now, what s gonna happen if they
do use the same color is that (A) it ll be used for comedic effect as you can see here;
and (B) it ll eliminate the body from the picture or whatever area is covered by that
color. Since we re keying out the same color, unfortunately, it keys out the colors that
are on the body as well. Now, the last part of this process is you re gonna wanna make
sure that your screen is void of ripples and nice and smooth and very stretched out. The
reason for this is because if you do have ripples, it ll create small little shadows
that ll affect the color of your key. Now, we re gonna jump into step number two of this
tutorial and we re gonna talk about the lights. The first thing we re gonna light is our green
screen. We re gonna take two lights. Number one, right here, and we re gonna move it just
about 15 degrees in line with the green screen. Now, we re also gonna do that with the other
light and the reasoning for this is so that these lights will light this screen independently
and also bounce the light into each other right off of the green screen. This creates
a nice, evenly lit screen void of any shadows, any ripples, since our screen is pulled tight,
and it s gonna make it very easy for us to sample one color and make sure it stays consistent
across the key. s go ahead and set up our green screen. Julie, do you think out could
help me out with this light over here? I ll grab this light. [Music Playing]
So, once we get our lighting just right, you can notice that the reason we do this is because
it allows us to separate this key and allows us the most control possible over the green
screen. Now, that we have our green screen set up, we re gonna light our subject independently
as we take a look at step number three. d like to bring in Julie one more time. We re
gonna have Julie stand right about here, as you guys can see, about three feet away from
our green screen. She s gonna be our weather girl for this step. Using the techniques from
three point lighting, we ll take the use of a key light and the use of a fill light to
light our subject from both sides. This soft box light, we re gonna be using as a our key
light, which is gonna provide the main source of illumination for Julie here, as we re gonna
raise this about three or four feet higher than she is herself so that it can reflect
a more natural lighting scenario, such as the sun bringing down light upon you. And
the idea is to provide a lot of light, and with our fill light, we re gonna clean up
the subject. When we move our fill light into place, we re gonna want it to be a little
bit less intense than our key light and it s gonna spread a lot of soft light and it
s gonna cover a surface area moreso than the key light, which is gonna kind of be a little
bit more harsh and more direct on our subject, even though we are using a very powerful soft
box light. But now, if we come to our camera and we look at our LCD screen, we can monitor
just how well she s lit and we can see where the shadows are and where the shadows shouldn
t be. So, now we have successfully lit our green screen and we have successfully, independently
lit our subject. The last part of the puzzle is to sell the effect, create the illusion.
Since Julie is gonna be our weather girl, she s gonna need to act like she s telling
the weather. Therefore, when we put the graphic behind her of the actual weather map, it looks
like it s one continuous shot. It looks like it s been done live and that s the key here.
Julie, act away. Female: We have a ridge of low pressure coming down here, which will
bring some wind and cooler weather, but up here, it s gonna be hot, hot, hot. [Laughter]
Male: Utilizing these four simple steps, all of us can light a green screen, but, first,
just makes sure that you, yourself, are prepared. Number two, make sure you light the green
screen itself and separate it from the subject, which is step number three, lighting that
person, using a studio environment. And, number four, make sure you sell the effect. [Music
Playing] [End of Audio] Green Screen Lighting Page PAGE of NUMPAGES Male, Female www.verbalink.com
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