Category: Lesson Plans

exposure-triangleExposure is a very essential and crucial part of the film industry. Correctly exposing the camera is very important and can determine the feel wanted for certain scenes and either make or break the shot being recored. What determines exposure? There are three changeable settings that control exposure, Aperture, Shutter Speed, and ISO.

Aperture controls the opening in the diaphragm in the lens, which in turn
determines the amount of light that passes through the lens and to the aperturefilm itself. Aperture manages depth of field, or what is in focus to the
camera. Aperture is measured in F-Stops. The larger the number F-Stop, the smaller  the amount of light is let though the lens. Example F/2 has a great deal of light whereas F/16 has such a tiny amount of light which is allowed in. These F-Stops personify different stops of light.

Shutter Speed determines at what speed the diaphragm opens and closes, which controls how long the light will enter the lens for. The shutter speed is measured in fraction of seconds and allows you to adjust Broad-tailed-Hummingbird-in-flight-650x432
capturing things at different rates of movement. If your shutter speed is faster than the movement of the thing you’re recording than your image will be outstandingly sharp.  For example, if you’re filming a humming bird, take into account that its wings flap about 55 times a second. At the setting 1/30th the wings are unclear and indistinct but change the shutter speed setting to about 1/250th the wings are visible and crystal clear.


ISO settings controls how sensitive the cameras image sensor is to the
light that comes into the camera. The higher the ISO, the harder the image sensor works to form a picture but with of cost of a grainy low quality image called “noise”. The lower the ISO, the less the image sensor has to work, creating a clean high quality crisp image.

Main Parts of a Tripod: Head, Legs, and Spread.heavy-tripod-hero

The Head uses the clip to hold in the camera. Always put the clip back into the head after using the tripod. The head allows for a Pan and Tilt movement during filming or just a stabilized still shot. The drag control will allow you to adjust tension and lock down the specific angle desired. There are three legs that are adjustable and support the head. The Spread is what hold the legs together at the bottom. Tripods can have a wheel mount on the legs and do a dolly movement as well as attaching a track to achieve this camera movement.

construction-helmet-and-glovesHealth and Safety:

When rigging up lights in the studio or on set, be sure to wear helmets to avoid falling objects, as well as thick gloves to avoid burning yourself from hot lamps. When climbing ladders to set up lights in the
studio be sure someone is holding the ladder so it is stable and wont tip over. Watch out for exposed wires and always tape down loose cables to avoid tripping over and injuring yourself. Although everyone is held liable for there own health and safety, ultimately it is up to the director to make sure everything is done properly.


Amps= watts divided by volts. Example: A 1000 watt lamp divided by 250 volts (in England) equals 4 amps. About 3, 1000 watt lamps can be used on a single socket as wall sockets can handle up to 13 amps. 4 amps multiplied by 3 equals 12 and you wouldn’t want to risk another lamp as it would blow the socket. Be cautious of 3 phase power in big industrial buildings as some could have 2 or more phases, and if they do, stay away and do not touch both as you would risk getting an electric shock. Make sure there is always an escape plan if worse comes to worse and an electrical fire begins.