Basic Photography Course

OXIDATION

耶hemical combination of oxygen with

other substances. In photography, the loss of activity
of developer solutions is due partly to oxidation of
the developing agent with oxygen in the air and
partly to oxidation with the silver halide during
development. (PIA)

PIXEL

茅he smallest single picture element with which

an image is constructed. The light-sensitive
elements in a CCD (chip) camera.

PLANE

耍 surface which has no curvature; a perfectly

flat surface.

PAN (WITH A CAMERA)

胖uring the course of

photographing a scene, to swing the camera around
in such a way as to follow the action. Derived from:
Panorama. Camera pans are commonly described
as slow-pan, fast-pan, swish-pan, and jerky-pan.

PAPER, VARIABLE CONTRAST

致hotographic

paper coated with emulsions having contrast
characteristics grading from soft to hard, depending
on the color of the exposing light as modified by a

series of filters supplied for that purpose.

POLARIZER

耍n optical device for converting

unpolarized, or natural light, into polarized light.

POSITIVE, BLACK AND WHITE

耍 photographic

image on film, plate, or paper in which light tones
appear light and dark tones are rendered dark

POSITIVE FILM

致hotographic film, designed for the

printing of positive transparencies from negatives.

POSITIVE PRINT

耍 print in which the light and dark

areas as they exist in the original.

PARALLAX

茅he apparent displacement of an object

seen from different points. Commonly encountered
in photography in the difference between the image
seen in the viewfinder and that actually taken by the
lens.

POTASSIUM BROMIDE (BROMIDE OR

POTASH), KBr

苦hite crystals, very soluble in

water. Used as a restrainer in developing solutions.
Also used in bleaches and clearing solutions.

PERSISTENCE OF VISION

耍 property of the eye

that consists of an inability to detect the flickering
of a light that exceeds a certain critical frequency.

PERSPECTIVE

茅he relative size and alignment of

objects as recorded on a plane surface; the illusion
of three dimensions created on a flat surface.

POTASSIUM HYDROXIDE KOH

耶austic alkali

used as an accelerator in photographic developers.
Concentrated solutions are quite caustic and will
attack the skin, causing painful burns. Similar to
sodium hydroxide.

Al-12

PHOTOELECTRIC CELL

耍 cell that converts light

energy proportionally into electrical energy. It is
used in exposure meters and sound recorders and
reproducers.

POWER, RESOLVING

茅he measure of the ability of

a lens, a photographic material, or a combination of
both, to distinguish detail under certain specific
conditions, among which are the shape and contrast
of the target, the quantity of illumination, the
exposure and the method of processing. The
measure of this ability is expressed in lines per
millimeter or in angular resolution of a lens.

PHOTOMETER

耍n instrument for measuring the

visual intensity of light, specifically for comparing
the relative intensities of light emitted from
different sources of illumination. (PIA)

PREROLL

茅o start a videotape and let it roll for a few

seconds before it is put in the playback or record
mode, so the electronic system has time to stabilize.

PICKUP TUBE

茅he imaging device of a video camera

that converts light into electrical energy-the video
signal.

PRESERVATIVE

茅he ingredient of a photographic

developer that protects it from rapid oxidation.

PINHOLE

�(l) Term applied to tiny spots in a

photographic negative; usually produced as the
shadow of a dust particle during exposure, more
rarely the result of chemical dust contamination or

gas bubble formation in the gelatin layer due to
improper processing. (2) Tiny or white or clear areas
in a print or drawing material.

PRINTER, CONTACT

耍 photographic printer in

which the negative is held in contact with print
material during the exposure. The image of a print
made with a contact printer is the same size as the
image in the negative.

PINT, LIQUID

耍 unit of capacity equal to 16 fluid

ounces, or 473.17 milliliters.

PRINTER, PROJECTION

耍 photographic printer in

which the negative is positioned some distance from
the print material; the image being projected onto
the print material. The image of a print made with a
projection printer is usually larger than the image in
the negative.

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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 -> OXIDATION 耶hemical combination of oxygen with other substances. In photography, the loss of activity of developer solutions is due partly to oxidation of the developing agent with oxygen in the air and partly to oxidation with the silver halide during development. (PIA) PIXEL 茅he smallest single picture element with which an image is constructed. The light-sensitive elements in a CCD (chip) camera. PLANE 耍 surface which has no curvature; a perfectly flat surface. PAN (WITH A CAMERA) 胖uring the course of photographing a scene, to swing the camera around in such a way as to follow the action. Derived from: Panorama. Camera pans are commonly described as slow-pan, fast-pan, swish-pan, and jerky-pan. PAPER, VARIABLE CONTRAST 致hotographic paper coated with emulsions having contrast characteristics grading from soft to hard, depending on the color of the exposing light as modified by a series of filters supplied for that purpose. POLARIZER 耍n optical device for converting unpolarized, or natural light, into polarized light. POSITIVE, BLACK AND WHITE 耍 photographic image on film, plate, or paper in which light tones appear light and dark tones are rendered dark POSITIVE FILM 致hotographic film, designed for the printing of positive transparencies from negatives. POSITIVE PRINT 耍 print in which the light and dark areas as they exist in the original. PARALLAX 茅he apparent displacement of an object seen from different points. Commonly encountered in photography in the difference between the image seen in the viewfinder and that actually taken by the lens. POTASSIUM BROMIDE (BROMIDE OR POTASH), KBr 苦hite crystals, very soluble in water. Used as a restrainer in developing solutions. Also used in bleaches and clearing solutions. PERSISTENCE OF VISION 耍 property of the eye that consists of an inability to detect the flickering of a light that exceeds a certain critical frequency. PERSPECTIVE 茅he relative size and alignment of objects as recorded on a plane surface; the illusion of three dimensions created on a flat surface. POTASSIUM HYDROXIDE KOH 耶austic alkali used as an accelerator in photographic developers. Concentrated solutions are quite caustic and will attack the skin, causing painful burns. Similar to sodium hydroxide. Al-12 PHOTOELECTRIC CELL 耍 cell that converts light energy proportionally into electrical energy. It is used in exposure meters and sound recorders and reproducers. POWER, RESOLVING 茅he measure of the ability of a lens, a photographic material, or a combination of both, to distinguish detail under certain specific conditions, among which are the shape and contrast of the target, the quantity of illumination, the exposure and the method of processing. The measure of this ability is expressed in lines per millimeter or in angular resolution of a lens. PHOTOMETER 耍n instrument for measuring the visual intensity of light, specifically for comparing the relative intensities of light emitted from different sources of illumination. (PIA) PREROLL 茅o start a videotape and let it roll for a few seconds before it is put in the playback or record mode, so the electronic system has time to stabilize. PICKUP TUBE 茅he imaging device of a video camera that converts light into electrical energy-the video signal. PRESERVATIVE 茅he ingredient of a photographic developer that protects it from rapid oxidation. PINHOLE �(l) Term applied to tiny spots in a photographic negative; usually produced as the shadow of a dust particle during exposure, more rarely the result of chemical dust contamination or gas bubble formation in the gelatin layer due to improper processing. (2) Tiny or white or clear areas in a print or drawing material. PRINTER, CONTACT 耍 photographic printer in which the negative is held in contact with print material during the exposure. The image of a print made with a contact printer is the same size as the image in the negative. PINT, LIQUID 耍 unit of capacity equal to 16 fluid ounces, or 473.17 milliliters. PRINTER, PROJECTION 耍 photographic printer in which the negative is positioned some distance from the print material; the image being projected onto the print material. The image of a print made with a projection printer is usually larger than the image in the negative. contents Basic Photography Course <- previous page next page ->	As an Amazon Associate I earn from qualifying purchases.
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