Glossary - Samsung HMX-Q10BP User Manual

GLOSSARY

AF (Auto Focus)
A system that automatically focuses the camcorder lens on the subject. Your camcorder uses
the contrast to focus automatically.
Aperture
The aperture controls the amount of light that reaches the camcorder's sensor.
Camcorder shake (Blur)
If the camcorder is moved while the shutter is open, the entire image may appear blurred. This
occurs more often when the shutter speed is slow. Prevent camcorder shake by raising the
sensitivity, using a faster shutter speed. Alternately, use a tripod, the DIS or OIS function to
stabilise the camcorder.
Composition
Composition in photography means arranging objects in a photo. Usually, abiding by the rule of
thirds leads to a good composition.
Complementary Metal-Oxide-Semiconductor (CMOS)
CMOS is an image sensor producing images approaching the quality of CCD (charge coupled
device) sensors. It consumes less power, meaning a longer battery life on your camcorder.
Digital zoom
A feature that artificially increases the amount of zoom available with zoom lens (Optical zoom).
When using the Digital zoom, the image quality will deteriorate as the magnification increases.
Effective Pixel Count
Unlike the total pixel count, this is the actual number of pixels used to capture an image.
EV (Exposure Value)
All the combinations of the camcorder's shutter speed and lens aperture that result in the same
exposure.
Exposure
The amount of light allowed to reach the camcorder's sensor. Exposure is controlled by a
combination of the shutter speed, the aperture value, and ISO sensitivity.
Focal length
106
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.
F. No (F-Number)
The f-number defines the brightness of lens. Smaller number lens has generally brighter image.
The f-number is directly proportional to the focal length and inversely proportional to the lens
diameter.
*F.No=focal length/diameter of lens aperture
MPEG-4 AVC/H.264
MPEG-4 AVC/H.264 defines the latest video coding format standardized by the ISO-IEC and
the ITU-T, in 2003. Compared with the conventional MPEG-2 format, MPEG-4 AVC/H.264 has
more than twice the efficiency. Your camcorder employs MPEG-4 AVC/H.264 to encode high
definition videos.
Optical zoom
This is a general zoom which can enlarge images with a lens and does not deteriorate quality of
images.
Quality
An expression of the rate of compression used in a digital image. Higher quality images have a
lower rate of compression, which usually results in a larger file size.
Resolution
The number of pixels present in a digital image. High resolution images contain more pixels and
typically show more detail than low resolution images.
Shutter speed
Shutter speed refers to the amount of time it takes to open and close the shutter, and it is
an important factor in the brightness of a photo, as it controls the amount of light which pass
through the aperture before it reaches the image sensor. A fast shutter speed allows less time
to let light in and the photo becomes darker and more easily freezes subjects in motion.
Tele Macro
This feature allows you to capture close-up images of very small objects. When using the Tele
Macro feature, the camcorder can maintain a sharp focus on small objects at a near life-size
ratio (1:1).
White balance (colour balance)
An adjustment of the intensities of colours (typically the primary colours red, green, and blue), in
an image. The goal of adjusting the white balance, or colour balance, is to correctly render the
colours in an image.
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