Samsung EC-PL170ZBPBUS User Manual

Page 119

Appendixes

118

Glossary

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 magniﬁed. Shorter focal lengths result in
wider angles of view.

H.264/MPEG-4

A high-compression video format established by international
standard organizations ISO-IEC and ITU-T. This codec is capable
of providing good video quality at low bit rates developed by the
Joint Video Team (JVT).

Image sensor

The physical part of a digital camera that contains a photosite for
each pixel in the image. Each photosite records the brightness of
the light that strikes it during an exposure. Common sensor types
are CCD (Charge-coupled Device) and CMOS (Complementary
Metal Oxide Semiconductor).

ISO sensitivity

The sensitivity of the camera to light, based on the equivalent ﬁlm
speed used in a ﬁlm camera. At higher ISO sensitivity settings,
the camera uses a higher shutter speed, which can reduce blur
caused by camera shake and low light. However, images with
high sensitivity are more susceptible to noise.

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. Set the EV compensation to -1.0 EV to
adjust the value one step darker and 1.0 EV to one step brighter.

Exif (Exchangeable Image File Format)

A speciﬁcation to deﬁne an image ﬁle 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.