Friday, 18 July 2008

Glossary of Difital Photo terms

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anti-aliasthe technique of minimizing the distortion artifacts known as aliasing when representing a high-resolution signal at a lower resolution
Royalty freea term stock photography agencies use to denote that an image is licensed for multiple use. Usually a eupemism for shots the agency can't sell. Avoid this like the plague!
rights manageda term stock photography agencies use to denote that an image is licensed for one specific use only
flash/blurshots where long exposures are mixed with flash
model releasea document allowing reproduction rights
vizunderwater visibility - arguably the most important factor for underwater photography
snoota funnel shaped tube placed over the flash head to direct the light
HIDHigh intensity discharge lights
close-upPhotography of smaller subjects (larger than macro) shot close, typically six inches from the lens reproducing greater than 1:3
vignettingcropping of the corners of the frame. If unintentional, it is due to a misaligned lens or port.
hosepipeshoot everything in sight!
negative spacea compotional term to describe neutral space used to isolate and emphasise the subject
Lead linesusing lines as a compositional device to lead the eye into the subject
post-productiona euphemism for editing in a photo manipulation program. An excuse for sloppy work e.g. 'we'll fix it in post!'
rangefindera simple window in the camera or accessory on top that approximates the coverage of the lens for framing composition
Filla second flashgun should be used to fill-in the shadows caused by the main strobe and should therefore be less powerful
Inverse Square LawThe quantity of light falling on a subject is inversely proportional to the square of the distance from the source
exposure latitudethe extent to which a light-sensitive material can be over or underexposed and still achieve an acceptable result
luminancephotometric measure of the density of luminous intensity in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle
Ambient Lightnatural light from the Sun
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Glossary of Difital Photo terms

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