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Appendix > Glossary
Exif (Exchangeable Image File Format)
A specication that denes an image le format for digital cameras created
by the Japan Electronic Industries Development Association (JEIDA).
Exposure
The amount of light allowed to reach the camera’s sensor. Exposure is
controlled by a combination of the shutter speed, the aperture value, and
ISO sensitivity.
Flash
A speed light that helps to create adequate exposure in low-light
conditions.
Focal length
The distance from the middle of the lens to its focal point (in millimeters).
Longer focal lengths result in narrower angles of view and the subject is
magnied. Shorter focal lengths result in wider angles of view.
Depth of eld
The distance between the nearest and farthest points that can be
acceptably focused in a photograph. Depth of eld varies with lens
aperture, focal length, and distance from the camera to the subject.
Selecting a smaller aperture, for example, will increase the depth of eld
and blur the background of a composition.
Electronic rst curtain shutter
The sensor acts as the rst curtain of the shutter. With this function,
the shutter reacts faster because no process is needed to operate the
mechanical curtain.
EV (Exposure Value)
All the combinations of the camera’s shutter speed and lens aperture that
result in the same exposure.
EV Compensation
This feature allows you to quickly adjust the exposure value measured by
the camera, in limited increments, to improve the exposure of your photos.