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This problem arises from small differences in the individual responsitivity of the sensor array (including any local postamplification stages) that might be caused by variations in the pixel size, material or interference with the local circuitry. It might be affected by changes in the environment like different temperatures, exposure times, etc.
The ISO setting on a digital camera is the first (and sometimes only) user adjustable gain setting in the signal processing chain. It determines the amount of gain applied to the voltage output from the image sensor and has a direct effect on read noise. All signal processing units within a digital camera system have a noise floor.
Magic Camera, sometimes known as Magic Camera virtual webcam, is an application for Microsoft Windows to generate virtual webcams on Windows, which can be used to stream files/screens as webcam, or create webcam effects on physical webcam.
Video feedback. Video feedback is the process that starts and continues when a video camera is pointed at its own playback video monitor.The loop delay from camera to display back to camera is at least one video frame time, due to the input and output scanning processes; it can be more if there is more processing in the loop.
The in-camera effect is defined by the fact that the effect exists on the original camera negative or video recording before it is sent to a lab or modified. Effects that modify the original negative at the lab, such as skip bleach or flashing, are not included. Some examples of in-camera effects include the following: Matte painting
Camera and projector mechanical effects. The features mostly related to the film movement and shutter effects, typical for any device with film transportation and mechanical shutter — be it a camera, projector or video coding device ( telecine or scanner).
Rolling shutter describes the process of image capture in which a still picture (in a still camera) or each frame of a video (in a video camera) is captured not by taking a snapshot of the entire scene at a single instant in time but rather by scanning across the scene rapidly, vertically, horizontally or rotationally. Thus, not all parts of ...
Optical effects (also called photographic effects) are techniques in which images or film frames are created photographically, either "in-camera" using multiple exposures, mattes, or the Schüfftan process or in post-production using an optical printer. An optical effect might place actors or sets against a different background.