After the presentation, we have received a lot of comments
and suggestions.
We appreciate them and we have found some ways to improve
them.
For the lighting of the video, I was asked to do research on
three point lighting.
Three-point lighting is a standard method used in visual
media such as video, film, still photography and computer-generated imagery. It
is a simple but versatile system which forms the basis of most lighting. The
goal of three point lighting is to create the illusion of a three-dimensional
subject in a two-dimensional image. While you can create dimension a number of
different ways, there’s no doubt that using light and shadow is a powerful way
to accomplish this, and three point lighting is the lighting technique most
commonly used.
- If you only have one light, it becomes the key.
- If you have 2 lights, one is the key and the other is either the fill or the backlight.
The Key Light is the main light used on the subject. It is
usually the strongest and has the most influence on the look of the scene. It is
placed to one side of the camera/subject so that this side is well lit and the
other side has some shadow.
The Fill Light is used to fill in the shadows created by the
key light, preventing them from getting too dark. This is the secondary light
and is placed on the opposite side of the key light. The fill will usually be
softer and less bright than the key. To acheive this, you could move the light
further away or use some spun. You might also want to set the fill light to
more of a flood than the key.
The Back Light is used to separate the subject from the
background. The back light is placed behind the subject and lights it from the
rear. Rather than providing direct lighting (like the key and fill), its
purpose is to provide definition and subtle highlights around the subject's
outlines. This helps separate the subject from the background and provide a
three-dimensional look.
The basic procedure is as follows:
1. Start in darkness.
Make sure there are no default lights, and there's no global ambience. When you
add your first light, there should be no other light in the scene.
2. Add the key light,
to create the subject's main illumination, and to define the most visible
lighting and shadows.
3. Set the fill light
to illuminate shadowed areas and to soften and extend the illumination provided
by the key light.
4. Set a backlight to
create a bright line around the edge of the object and to separate the subject
from the background.
Below are links for further reading:
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