Photo II Exam Terms Flashcards
Continuous tone
describes an image with a smooth gradation of tones from black through bray to white.
Daguerrotype
1839, Nicephore Niepce, silver + mercury vapor
Dense
very dark, as in the film due to overexposure
Density
The amount of silver present in a negative, producing light stopping ability of light areas in a print.
Exposure index
a film speed rating similar to an ISO rating, abbreviated EI
Illuminance
The strength of light falling on a given area.
Lamphouse
part of enlarger which contains the light source
Latitude
amount by which a negative (or sensor in the case of digital) may be over or under exposed without much loss of image quality.
Pull
To expose your film at a lower ISO then compensate by overdeveloping the film to increase the quality of the image.
Reticulation
cracking or distorting of the emulsion during processing
Sabattier effect
A partial reversal of tones that occurs when film or paper is re-exposed to light during development. Commonly called solarization.
Silver Halides
The light sensitive part of common photographic emulsions; the compounds silver chloride, silver bromide and silver iodide.
Abberation
an optical defect in a lens causing it to form an image that is not sharp or that is distorted.
AE
Automatic exposure
AF
Automatic Focus
Angle of View
The area seen by a lens or viewfinder or read by a light meter.
Barrel distortion
a lens aberration or defect that cause straight lines to bow outward, away from the center of the images.
Bracket
to make several exposures, some greater and some less than the exposure that is calculated to be correct. Bracketing allows for error and permits selection of the best exposure after development.
Camera View
angle point of view in which the subject is photographed
Cassette
metal or plastic film spool container [This is what contains your film that gets
loaded into the cameras.]
Contrast grade
the contrast that a printing paper produces. Systems of grading contrast are not uniform, but in general grades 0 and 1 have low or soft contrast; grades 2 and 3 have normal or medium contrast; grades 4, 5 and 6 have high or hard contrast.
Contre-jour
a condition in which the source of light is directly behind the form it illuminates.
Depth of field
The area between the nearest and the farthest points from the camera that are acceptably sharp in an image.
Filter factor
the number of times exposure must be increased to compensate for light absorbed by a filter
Ground glass
a screen at the back or top of a camera on which the image is focused
Halation/Chromatic Aberration
og or halo around brilliantly lighted objects.
High Key
print having a majority of its tones light gray or white
Low Key
print having a majority of its tones dark gray to black
Panchromatic
sensitive to all colors
Parallax
difference in the fields of view of two lenses aimed parallel to each other
Plane of Critical focus
The part of the scene that is most sharply focused.
Resolving power
the ability of a lens to separate closely spaced details in an object
Telephoto
type of lens that makes a subject appear larger on the film than does a normal lens at the same camera-to-subject distance
Zone system
a way to plan negative exposure and development to achieve precise control of the darkness of various area in a print, invented by Ansel Adams.
