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Sensors & Digital Capture

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Sensors & Digital Capture

Dark Current

Charge that accumulates in a photosite from thermal energy rather than from light, growing with exposure time and temperature.

e⁻/s
Sensors & Digital Capture

Dark Frame

An exposure made with the shutter closed, at the same duration, temperature and ISO as the real image, used to characterise sensor noise.

Sensors & Digital Capture

Dead Pixel

A photosite that records no signal at all, appearing as a permanently black point in every image.

count
Sensors & Digital Capture

Demosaicing

The process of reconstructing a full-colour image from the single-colour samples recorded under a colour filter array.

Sensors & Digital Capture

Dual Conversion Gain

A sensor design offering two selectable amplification circuits, one optimised for dynamic range and one for low noise at high ISO.