Sensors & Digital Capture
5 terms
Dark Current
Sensors & Digital Capture
e⁻/s
Charge that accumulates in a photosite from thermal energy rather than from light, growing with exposure time and temperature.
Dark Frame
Sensors & Digital Capture
An exposure made with the shutter closed, at the same duration, temperature and ISO as the real image, used to characterise sensor noise.
Dead Pixel
Sensors & Digital Capture
count
A photosite that records no signal at all, appearing as a permanently black point in every image.
Demosaicing
Sensors & Digital Capture
The process of reconstructing a full-colour image from the single-colour samples recorded under a colour filter array.
Dual Conversion Gain
Sensors & Digital Capture
A sensor design offering two selectable amplification circuits, one optimised for dynamic range and one for low noise at high ISO.