Basic Photography Course

TRANSILLUMINATE

茅o illuminate through a docu-

ment, from the side opposite the camera.

UNDERDEVELOPMENT

背nsufficient

development; due to developing for too short a time,
use of a weakened developer or, occasionally, too
low a temperature.

UNDEREXPOSURE

背nsufficient exposure of a

photographic material, causing thin or weak images
and a corresponding loss of detail. (PIA)

VANISHING POINT

背n a perspective view, the point

where parallel lines receding from the observer
seem to come together.

VELOCITY OF LIGHT

茅erm applied to the speed of

light waves in a vacuum (Co); 229,792.5 kilometers
per second, or approximately 186,000 miles per
second. In all other media, light travels at a slower
rate.

VIDEO CASSETTE

耍 plastic container in which a

videotape moves from a supply reel to a take-up
reel. Used in all but the 1-inch VTRs.

VISIBLE SPECTRUM

茅he portion of the

electromagnetic spectrum to which the retina is
sensitive and by which we see. Extends from about
400 to 750 millimicrons in wavelengths of radiation.

VTR

苛ideotape recorder or recording. Includes video
cassette recorders.

WASHING

耍ct of removing soluble chemicals from

photographic layers through the agency of water,
especially the removal of fixation products and
hypo in order to avoid subsequent fading or
discoloration of the silver image.

WATER SPOTS

胖eformation of photographic gelatin

layers on a film or plate due to differential drying
when water drops stand on the surface and keep the
gelatin wet and swollen after the surrounding
gelatin has become dried and compressed. The spots
have a characteristic appearance when a negative on
which they occur is printed. Viscose sponges and
wetting solutions (detergents) are commonly used
to avoid such defects. (PIA)

WAVELENGTH

胎ength of a wave measured from any

point on one wave to the corresponding point on the

next wave; usually measured from crest to crest.

Wavelength determines whether radiant energy is
classed as gamma rays, X rays, or ultraviolet,

visible, infrared radiant energy, or radio.
Wavelength of visible radiant energy is the chief

determinant of its perceived color.

WETTING AGENT

耍 chemical added to water to

reduce surface tension, thereby improving wetting
characteristics and reducing the formation of water
drops. (NMA)

Y/C

茅he separate processing of the luminance (Y) and

chrominance (C) signals.

AI-15

contents

Basic Photography Course

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DOFMaster for Windows On-line Depth of Field Calculator DOFMaster for Mobile Devices On-line Depth of Field Table Hyperfocal Distance Chart Articles FAQ Recommended Books Support Contact Links Home As an Amazon Associate I earn from qualifying purchases.	contents <- previous page next page -> TRANSILLUMINATE 茅o illuminate through a docu- ment, from the side opposite the camera. UNDERDEVELOPMENT 背nsufficient development; due to developing for too short a time, use of a weakened developer or, occasionally, too low a temperature. UNDEREXPOSURE 背nsufficient exposure of a photographic material, causing thin or weak images and a corresponding loss of detail. (PIA) VANISHING POINT 背n a perspective view, the point where parallel lines receding from the observer seem to come together. VELOCITY OF LIGHT 茅erm applied to the speed of light waves in a vacuum (Co); 229,792.5 kilometers per second, or approximately 186,000 miles per second. In all other media, light travels at a slower rate. VIDEO CASSETTE 耍 plastic container in which a videotape moves from a supply reel to a take-up reel. Used in all but the 1-inch VTRs. VISIBLE SPECTRUM 茅he portion of the electromagnetic spectrum to which the retina is sensitive and by which we see. Extends from about 400 to 750 millimicrons in wavelengths of radiation. VTR 苛ideotape recorder or recording. Includes video cassette recorders. WASHING 耍ct of removing soluble chemicals from photographic layers through the agency of water, especially the removal of fixation products and hypo in order to avoid subsequent fading or discoloration of the silver image. WATER SPOTS 胖eformation of photographic gelatin layers on a film or plate due to differential drying when water drops stand on the surface and keep the gelatin wet and swollen after the surrounding gelatin has become dried and compressed. The spots have a characteristic appearance when a negative on which they occur is printed. Viscose sponges and wetting solutions (detergents) are commonly used to avoid such defects. (PIA) WAVELENGTH 胎ength of a wave measured from any point on one wave to the corresponding point on the next wave; usually measured from crest to crest. Wavelength determines whether radiant energy is classed as gamma rays, X rays, or ultraviolet, visible, infrared radiant energy, or radio. Wavelength of visible radiant energy is the chief determinant of its perceived color. WETTING AGENT 耍 chemical added to water to reduce surface tension, thereby improving wetting characteristics and reducing the formation of water drops. (NMA) Y/C 茅he separate processing of the luminance (Y) and chrominance (C) signals. AI-15 contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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