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840 terms · page 9 of 35
Darkroom
A light-tight room equipped for processing film and making prints.
Colour & Colour ManagementDCP Profile
A DNG camera profile, the file format used to describe a camera's colour response to raw processing software.
Sensors & Digital CaptureDead Pixel
A photosite that records no signal at all, appearing as a permanently black point in every image.
Post-Processing & RetouchingDeconvolution Sharpening
A sharpening method that models how the image was blurred and mathematically reverses that blur.
Focus & Depth of FieldDeep Depth of Field
A wide zone of sharpness in which foreground, subject and background all hold detail.
Post-Processing & RetouchingDehaze
A control that removes or adds atmospheric haze by estimating and correcting for scattered light.
Printing, Display & OutputDelta E
A numerical measure of the perceived difference between two colours, used to quantify display and print accuracy.
Sensors & Digital CaptureDemosaicing
The process of reconstructing a full-colour image from the single-colour samples recorded under a colour filter array.
Film, Darkroom & Historic ProcessesDensitometer
An instrument that measures the optical density of a negative, transparency or print.
Film, Darkroom & Historic ProcessesDensity
A measure of how much light a processed negative or print blocks, expressed logarithmically.
Composition & Visual DesignDepth Cues
The visual signals — overlap, relative size, convergence, haze and blur — that let a flat image suggest three dimensions.
Focus & Depth of FieldDepth of Field
The range of distances in front of and behind the plane of focus that appears acceptably sharp in the final image.
Cameras, Formats & SystemsDepth of Field Preview
A control that stops the lens down to the working aperture so the actual depth of field can be seen before exposure.
Focus & Depth of FieldDepth of Field Scale
Markings on a lens barrel showing the near and far limits of sharpness for each aperture at the set focus distance.
Focus & Depth of FieldDepth of Focus
The tolerance in sensor position, on the camera side of the lens, within which the image stays acceptably sharp.
Colour & Colour ManagementDesaturation
Reducing the intensity of colour, either globally toward monochrome or selectively within a range.
Film, Darkroom & Historic ProcessesDeveloper
The chemical solution that converts exposed silver halide crystals into metallic silver, making the latent image visible.
Composition & Visual DesignDiagonal Lines
Lines running at an angle to the frame edges, which introduce energy and a sense of movement.
Composition & Visual DesignDiagonal Method
A compositional approach placing points of interest on the 45-degree bisectors drawn from each corner of the frame.
Optics, Lenses & FiltersDiffraction
The spreading of light waves as they pass the edge of an aperture, which softens the image at small f-numbers.
Optics, Lenses & FiltersDiffraction Limit
The aperture beyond which diffraction, rather than lens design or sensor resolution, becomes the factor limiting sharpness.
Optics, Lenses & FiltersDiffusion Filter
A filter that scatters a small proportion of the light passing through it, lowering contrast and blooming highlights into a soft glow.
Lighting & FlashDiffusion Panel
A frame holding translucent fabric, used to enlarge and soften a light source placed behind it.
Files, Metadata & WorkflowDigital Asset Management
The systematic organisation, description, storage and retrieval of a body of image files.