Panasonic AG-HMC150 Посібник користувача - Сторінка 29
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Eye line match. Editing shots that are aligned, or
matched to suggest that two characters in separate
shots are looking at each other.
Fast motion. Shots photographed slower than the
standard speed of 24 fps so that the action on the
screen appears faster than normal when projected at
standard speed. See Slow motion, Under-cranked,
Over-cranked.
Field. One half of a complete video image (frame),
containing all the odd or even scanning lines of the
image. See also Interlace, Frame.
Filter. A piece of glass tted in front of a camera lens
to control the color or quality of light entering the
camera.
FireWire. A fast data interconnection standard
originally developed by Apple, also known by the
standards designation IEEE 1394 or i.Link, Sony's
brand name for the same thing. FireWire is used for
connecting cameras and external hard disks to a
computer. ere are two avors: FireWire 400
(capable of 400 MB/sec) that uses either a 4-pin
connector (without power) or a 6-pin connector
(with power); FireWire 800 (capable of 800 MB/sec)
that uses a 9-pin connector (with power). Cameras
that support FireWire may have either a 4-pin or 6-
pin connector, but don't provide power. For external
hard drives, FireWire 800 provides improved data
transfer performance and is favored by video editors
who want the best performance. All DV and HDV
cameras have a FireWire connector. e new
generation of tapeless cameras may use either a
FireWire or USB connector, with USB growing in
favor.
First-person shot. See point-of-view shot.
Fisheye lens. An extreme wide-angle lens that
distorts the image so that straight lines appear
rounded at the edges of the frame.
Flicker. e alternation of light and dark which can
be visually perceived.
Focus pull. e process of refocusing a lens during a
shot in order to keep a subject in focus or to change
the subject of attention.
Focal length. e distance from the center of the
lens to the point on the lm plane where light rays
meet in sharp focus. A wide-angle lens has a short
focal length; a telephoto lens has a long focal length.
Focus. e sharpness or de nition of a lm image.
Introduction to the Panasonic AG-HMC150 AVCHD camcorder (rough draft)
Following shot. A shot in which the camera pans or
travels to keep a moving gure or object within the
frame.
Footage. 1. Exposed lm stock. 2. Recorded video
tape.
Format. e video codec, resolution, and frame rate
used for a production. For example, DVCPRO HD
720/24p (1280 x 720 progressive scan at 24 frames
per second using the DVCPRO HD video codec).
Frame. 1. An individual photograph recorded on
motion picture lm. e outside edges of a lm
image on the screen. 2. One complete video image,
or two video elds. ere are 30 frames in one second
of NTSC video. Also a single video or lm image. See
also Interlace, Field.
Frame rate. e number of individual frames per
second (fps), for example, traditional lm is shot at
24fps while video is typically 30fps. A lower frame
rate would not provide smooth motion. ese
standard frame-rates are an attempt to balance the
need for smother motion (the higher the frame rate,
the better) with storage efficiency (the lower the
frame rate, the better).
Framing. e visual composition of a shot within
the frame.
Frequency. e number of times a signal vibrates
per second. Expressed in Hertz (Hz), which is the
number of cycles per second.
Full shot. A long shot that includes the human body
"in full" within the frame.
Gain. e ratio, expressed in decibels (dB), of the
signal level at the output of an audio device to the
signal level at its input.
Gaffer's tape. A strong cloth-based tape with a
special adhesive that does not leave behind any
residue when carefully "peeled" off surfaces. Not to be
confused with duct tape which leaves a sticky mess
behind.
Gigabyte. 1 Billion bytes.
Gray Card. A gray-colored card that re ects a known
and uniform amount of the light, 18% gray. Used as
a reference to set exposure and calibrate light meters.
In typical usage, 18% grey corresponds to 50% (or
50 IRE) in terms of video exposure.
Hand-held camera. A shot where a camera
operator, rather than a tripod or a mechanical device,
supports and moves the camera during lming.
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