Exposure control in a raw developer: misnomer?

Started Jan 30, 2013 | Discussions thread
jcharding
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I'd argue that scene luminescence is the misnomer
In reply to dosdan, Jan 30, 2013

It assumes that the photographer seeks some nirvana of perfectly exposed scene where luminescence actually matters mathematically.

I disagree with Detail Man, as usual, and argue that ISO remains third point of the triangle.  All three of aperture, shutter speed and ISO are photographer decisions. Made to move towards whatever that person wants to photograph. Scene luminescence, or scene brightness, isnt  a photographic decision. It simply is. It affects the shot, but isn't something the photographer can generally change short of turning on a bunch of lights.

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