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840 terms · page 1 of 35
120 Roll Film
A 61 millimetre wide roll film on a spool with paper backing, the surviving standard for medium-format photography.
Motion, Video & Creative Techniques180-degree Shutter Rule
The convention of setting the shutter speed to roughly double the frame rate, producing motion blur that reads as natural.
Files, Metadata & Workflow3-2-1 Backup Rule
The guideline of keeping three copies of data, on two different media types, with one copy off-site.
Cameras, Formats & Systems35 mm Format
The film format using 35 mm perforated stock with a 36 by 24 millimetre frame, which became the dominant standard of the twentieth century.
Motion, Video & Creative Techniques360-degree Photography
Capturing a complete spherical view around a point, viewed interactively or in a headset.
Colour & Colour Management3D LUT
A look-up table that maps colours in three dimensions, so a transformation can change hue and saturation as well as tone.
Genres, Movements & TheoryAbstract Photography
Photography that emphasises form, colour, texture and pattern over the identification of its subject.
Cameras, Formats & SystemsAction Camera
A small, ruggedised, wide-angle camera built to be mounted on a body, vehicle or piece of equipment.
Optics, Lenses & FiltersAcutance
The abruptness of the transition at an edge, which the eye reads as sharpness independently of true resolution.
Post-Processing & RetouchingAdded Grain
Synthetic texture introduced into a digital image to imitate film grain or to disguise other artefacts.
Post-Processing & RetouchingAdjustment Layer
A layer containing a tonal or colour adjustment that affects the layers beneath it without altering their pixels.
Colour & Colour ManagementAdobe RGB (1998)
A colour space with a wider gamut than sRGB, particularly in the cyan and green regions, designed to cover CMYK print output.
Genres, Movements & TheoryAdvertising Photography
Photography commissioned to promote a product, service or brand.
Composition & Visual DesignAerial Perspective
The reduction of contrast, saturation and detail with distance, caused by atmospheric scattering.
Genres, Movements & TheoryAerial Photography
Photography made from an elevated platform — aircraft, helicopter, drone or kite — looking down on the subject.
Focus & Depth of FieldAF Microadjustment
A camera setting that applies a per-lens correction to compensate for consistent front or back focus.
Focus & Depth of FieldAF-assist Illuminator
A lamp or patterned light that projects onto the subject to give autofocus something to measure in darkness.
Film, Darkroom & Historic ProcessesAgitation
The periodic movement of the developing tank that replenishes fresh chemistry at the emulsion surface.
Post-Processing & RetouchingAI Denoise
Noise reduction driven by a trained neural network that distinguishes noise from real detail using learned image structure.
Post-Processing & RetouchingAI Subject Selection
Automatic masking that identifies a subject, sky, background or facial feature using a trained model.
Optics, Lenses & FiltersAiry Disc
The small bright disc surrounded by faint rings that a perfect lens produces from a point source, set by diffraction alone.
Film, Darkroom & Historic ProcessesAlbumen Print
A printing process using egg white to bind light-sensitive silver salts to paper, giving a glossy surface and warm brown tones.
Sensors & Digital CaptureAliasing
The misrepresentation of detail finer than a sampling system can resolve, appearing as false structure rather than as blur.
Printing, Display & OutputAlpha-cellulose Paper
Paper made from highly purified wood pulp with lignin removed, offering archival stability at lower cost than cotton.