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How can exposure affect your videos?

By Jakob Jelling
Snapjunky.com

Exposure is an effect caused by an important variation of the light amount which passes through a camcorder's lens. When the lens receives too much light this is called over exposure and when it receives too little light this is called under exposure. This way, it is important to take into account the light conditions in which we wish to shoot a video and the way in which our camcorder is prepared for it.

Due to the high amount of light which a lens receives in over exposure, when this happens, the video looks too bright. On the other hand, when the opposite effect happens and the lens receives too little light causing under exposure, the resultant video looks dark and we might find it difficult to distinguish what it is about.

Proper exposure is the desired exposure level which can be achieved when the camcorder has a good balance between different factors. Camcorder's auto exposure features function by controlling the iris opening, the shutter speed and white balance. The aspects which might have the highest impact on your video's exposure level are the iris opening and shutter speed.

The shutter is what controls the amount of time which light information enters into the film. Digital cameras do not have a shutter but do electronically control the amount of light which each still picture or frame receives. This is one of the main aspects on which proper exposure depends on and must be in correct balance with the camcorder's iris functioning.

The iris, also known as aperture, is the camera's part that controls the amount of light which the film or image sensor will receive. This works simultaneously with the shutter, in such a way that while the shutter is opened allowing light to enter, the iris controls how much light actually does pass through it. This way, proper exposure is achieved when these two camera features are properly set. There are some cameras which allow its owners to use them in extreme light conditions, such as at night or pointing directly to the sun light without loosing much quality.

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