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Slide film has a slight advantage in recording shadow and hightlight detail than digital even though both are considered to have a 5 stop dynamic range. This is because that detail too close to the either edge of the dynamic range with digital 8 bit capture gets wiped out. Also digital capture produces more noise than desired in digital capture.
Quote from http://luminous-landscape.com/tutorials/understanding-series/understanding-histograms.shtml
With digital things are much the same and even the dynamic range is about the same as for slide film; about 5 stops. Also keep in mind that the total range of brightness values encountered in the real world is only about 10 stops In an image recorded in 8 bit mode.....................
This means that if you are exposing for an average subject, say something like a scene with people, trees, grass etc, these subjects will be exposed at about the mid point of the cameraâs dynamic range. Why is this important?
This is because if a subject is exposed too close to either extreme you will run into the limitations of the chipâs ability to record the image. Too close to 0 (absolute black) and there wonât be an image at all, or it will be very dark and noisy, and too close to 255 (absolute white) and there will be nothing there except oversaturated pixels with no image information. |
