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Terms starting with R

39 terms · page 2 of 2


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Colour & Colour Management

Relative Colorimetric Intent

A conversion strategy that reproduces in-gamut colours exactly and clips out-of-gamut ones to the nearest reproducible value.

Focus & Depth of Field

Release Priority

A setting that fires the shutter whenever the button is pressed, regardless of whether focus has been confirmed.

Lighting & Flash

Rembrandt Lighting

A portrait pattern in which a small triangle of light appears on the shadowed cheek, below the eye.

Colour & Colour Management

Rendering Intent

The strategy chosen for handling colours that fall outside the destination gamut during a colour space conversion.

Film, Darkroom & Historic Processes

Resin-coated Paper

Photographic paper sealed between thin polyethylene layers so chemistry cannot penetrate the base.

g/m²
Optics, Lenses & Filters

Resolving Power

The finest detail a lens or film can distinguish, traditionally expressed in line pairs per millimetre.

lp/mm
Optics, Lenses & Filters

Retrofocus Design

A wide-angle design with a negative front group that places the rear element further from the sensor than the focal length would allow.

Exposure & Metering

RGB Histogram

Three separate histograms, one per colour channel, revealing clipping that a combined luminance histogram would hide.

Lighting & Flash

Rim Light

A light placed behind and to one side of the subject that draws a bright edge along its outline, separating it from the background.

f-stops (EV)
Lighting & Flash

Ring Flash

A flash tube arranged in a circle around the lens, producing nearly shadowless frontal light.

GN (guide number)
Sensors & Digital Capture

Rolling Shutter Artefact

Distortion caused by a sensor being read out progressively, so different parts of the frame record at slightly different times.

ms
Files, Metadata & Workflow

Round-trip Editing

Sending an image from a catalogue to an external editor and returning the result automatically to the same collection.

Composition & Visual Design

Rule of Odds

The observation that an odd number of subjects in a frame usually reads as more settled than an even number.

count
Composition & Visual Design

Rule of Space

The guideline that a subject which is moving or looking in a direction should have space in front of it within the frame.

Composition & Visual Design

Rule of Thirds

A guideline that divides the frame into nine equal parts and suggests placing key elements along those lines or at their intersections.

Frame ÷ 3 horizontally and vertically