Sensors & Digital Capture
5 terms
Sensors & Digital Capture
Dark Current
Charge that accumulates in a photosite from thermal energy rather than from light, growing with exposure time and temperature.
Sensors & Digital CaptureDark 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 CaptureDead Pixel
A photosite that records no signal at all, appearing as a permanently black point in every image.
Sensors & Digital CaptureDemosaicing
The process of reconstructing a full-colour image from the single-colour samples recorded under a colour filter array.
Sensors & Digital CaptureDual Conversion Gain
A sensor design offering two selectable amplification circuits, one optimised for dynamic range and one for low noise at high ISO.