Sharpening in image processing increases contrast along edges so that a photograph looks crisper, without adding any detail the camera did not…
Sharpness in photography is the perceived clarity of detail and edges in an image, shaped by resolution, acutance, focus, motion and viewing…
Shot noise is the random variation in the number of photons a camera sensor captures, the main source of noise in most…
Shutter count is the number of exposures a camera's mechanical shutter has made, used to judge wear, remaining service life and the…
Shutter speed in photography is the length of time the sensor gathers light, controlling exposure brightness, motion blur and camera shake.
Signal-to-noise ratio in photography compares the useful image signal with random noise, determining how clean and detailed a digital photo looks.
Soft light is illumination from a source that is large relative to the subject, producing gradual shadow edges, gentle contrast and smooth…
Soft proofing is the on-screen simulation of how a photograph will look when printed on a specific paper, printer and ink combination…
A speedlight is a compact, battery-powered flash unit for photography that mounts on the camera hot shoe or works off camera as…
Spot metering measures light from a small area of the frame, usually a few percent, so the photographer sets exposure for one…
A stacked sensor is a CMOS image sensor built from bonded layers that separate pixels from processing circuits, enabling very fast readout…
Street photography is a genre of photography that records unposed moments of everyday life in public places, relying on observation and timing.
A strobe is an electronic flash unit, usually mains or battery powered, that fires a brief, intense burst of light for studio…
Subject tracking is the autofocus function that identifies a chosen subject and keeps focus on it as it moves across the frame…
Symmetry in photographic composition is a balanced arrangement in which one part of the frame mirrors or repeats another around an axis…