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Appendix >
Glossary
JPEG (Joint Photographic Experts Group)
A lossy method of compression for digital images. JPEG images are
compressed to reduce their overall file size with minimal deterioration of
the image resolution.
Metering
The metering refers to the way in which the camera measures the
quantity of light to set the exposure.
MF (Manual Focus)
A system that manually focuses the camera lens on the subject.
You can use the focus ring to focus on a subject.
MJPEG (Motion JPEG)
A video format which is compressed as a JPEG image.
MPO (Multi Picture Object)
An image file format that contains multiple images in a file. An MPO file
provides a 3D effect on MPO-compatible displays, such as 3D TVs or
3D monitors.
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).
IP (Internet protocol) address
An IP address is a unique number that is assigned to every device that
is connected to the internet.
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.
