Key Photographic Terms

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 Aperture

The variable opening inside the lens which allows you to control light and DoF

Bracketing

Taking multiple photos and varying exposure, allows you to get photos at perfect exposure as well as ones which are too light or too dark.

Bulb

A setting on your camera which allows you to get full control of the exposure of the camera and vary the length, you hold the button in and it exposes while you have it pressed

DSLR

Digital Single-Lens Reflex

Any digital camera with interchangeable lenses where the image is viewed through a mirror and the camera uses a prism

EV

Exposure value, a number which is the combination of the shutter speed and aperture.

Exposure

The light in an image from decreasing shutter speed or increasing aperture size (larger hole),  this would have a high EV

F-stop

A measure of the aperture opening in the lens defined by dividing the focal length of the lens by the aperture diameter.


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