Lighting
If you are just trying out lighting effects for your
first movie, use this guide to get you started.
Lighting helps to:
- Pick out relevant details and figures in a scene.
- Tell the audience what you as director prioritise
within a shot, and therefore the story.
- Establish a set of values to what we are seeing,
by throwing more and less light on the elements
in a scene.
- Enforce emotional pull in a scene, heightening
mood and atmosphere.
- Allow the camera to see properly, on a technical
level
- Allow you to create a look for the film.
Automatic camera features: why you don’t need
them
Your biggest enemy on the camcorder is probably the
automatic setting. This is useful for some conditions
but on the whole you cannot rely on it to deliver
when it comes to creative filmmaking- it’s the
fast food of lighting. Since the camera fills in the
frame if it doesn’t see amount of light it would
like, it is better to have a camera with manual override
to switch off this feature - which the vast majority
do. This means you can set the lighting yourself and
be more creative about what you record. As an example,
you may want to shoot a scene in which a group of
people are in a room, with windows behind them with
bright sunlight flooding in. On auto, the camera simply
cancels out some of the sunlight, rendering the figures
dark beyond all recognition, the sunlight just about
right. But you may want the scene to be over-exposed
(too much light coming in) in the windows because
that gives a certain feel to the scene, and in any
case is the only sure way to still see the figures.
Automatic wants to do it the way the manufacturers
handbook says but manual allows you to do it your
way.
Iris and light
Just as with the human eye, the camera has a small
hole at the front of the lens which controls how much
light is allowed in. In bright conditions, it closes
slightly to block some out, while in darker conditions
it opens to make more of what little light there is.
On a technical level, the iris is important in stopping
the inner workings of the camera from being damaged
by too much sunlight, just as does the human iris.
Too much light also stops the camera from reading
colour correctly. But like other features on the camera,
we can use the iris creatively. Allowing too much
light, or restricting light, can be useful ways of
adding atmosphere to a scene.
Colour temperature
Something else that video cameras, particularly at
the lower end, are not good at is balancing the colours
it sees which is why it has a white balance feature
which helps it take out the ‘cast’ of
a particular lighting condition, that is, the particular
colours given off by most artificial light. The human
eye performs a similar routine every time you enter
a new environment. A room lit by a domestic light-bulb,
for instance, will not give off true light in the
way we think of daylight, but instead is tinted by
orange. This can play havoc with your film so we need
either to use light that does not give off unwanted
colours, or adjust the camera to offset what it sees.
- Good studio lighting
- Use lamps
- Use lighting to help you with composition
- Use contrast
- Don’t over-light
- Use shadow
Use lamps
Realism is often the aim of a filmmaker. But you don’t
get realistic lighting by using just what is around
naturally. If the camera was as sophisticated as the
human eye then you could do this, but you have to
help a camera to see as we see. This involves using
additional light, whether you are outside in natural
daylight, or in what seems to be well-lit room. The
level of light is not really the issue here; it is
about directing the light, altering the intensity
of it and removing it from some areas. Lamps will
help you with this, but you don’t necessarily
have to go out and spend half your budget on the full
range. Like everything, there are ways of using fewer.
Basic lamp technique
The basic aim of using lamps is to:
- Pick out the primary object in a scene (known
as the Key Light)
- Reduce some of the harshness of the key light
with small, softer lights (known as Fill Light)
- Lift the background to increase depth and separate
the main figure from it (known as the Background
light).
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