In the last couple of excercises the two areas reviewed are generally considered the two most pressing technical issues in exposing for a digital photograph. Both highlight clipping and noise are digital photography problems (not encountered in film photography). Highlight clipping and noise are also at opposite ends of the tonal scale, and define what is known as the dynamic range of a camera.
The dynamic range of a scene is therefore a number of stops between the brightest highlight and the darkest shadow. The dynamic range of a camera is the number of stops it can capture in one exposed frame.
If the dynamic range of the camera is greater than the scene to be photographed there should be no problem capturing all the visible detail, if, on the other hand, the camera's range is less than that of the scene, something has to be lost. This is the cause of almost all exposure problems, so this is something to get to grips with. Being able to relate the dynamic range of the camera to that of the scene is something I need to get grips with. I have obtained several books from the 'essential reading' list so will see what I can find.
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