HSC200H5 Lecture Notes - Lecture 8: Wide-Angle Lens, Normal Lens, Telephoto Lens
21 Nov 2017
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Measured in seconds of fractions of a second. Doubling of shutter speed; reduction of lights by half. Regulates how much light is absorbed through the lens. Doubling of t/stop value; reduction of light by half. Iso = international organization for standardization (1974-present) Authentic scales to describe sensitivity of film, and now digital sensors. Doubling of numerical value = doubling of film speed. Digital camera sensors are calibrated so lightness of rgb images is comparable to equivalent iso film. Ccd sensors are subject to recording errors, thermal disturbances, etc. resulting in noisy images. Derived from heating a blackbody radiator" until it glows. Daylight has all colors present, artificial light sources are represented by. Digital cameras have settings to exposure in different light conditions to take smaller portions of the visible spectrum into account different light temperatures" and render out neutral white. 35mm film camera: 35mm- 24mm (rectilinear distortion)
