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by unfocussed_mike
1560 days ago
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Right. Metering is even now with scene programs and AI still basically a complicated negotiation about establishing middle grey -- when there may be no perceptual middle grey in the scene at all (black cat in coal bin, polar bear in snow) The narrow band of sensitivity of a film or sensor has to be sort of moved to where it is needed (by controlling how much light gets in or for how long) according to the result the photographer is likely to want from their photo. Even the most basic of film dead-reckoning methods -- Sunny 16 -- relies on subjective input from the photographer: https://en.wikipedia.org/wiki/Sunny_16_rule And it's up against the nature of human perception of light and dark, which as this classic page demonstrates, is complex: https://scienceinfo.net/video-chessboard-illusion-confuses-p... |
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