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Red Scarlet X 3.2 - 2012 Manual

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955-0003_v3.2, Rev- A1 COPYRIGHT © 2012 RED Digital Cinema
211
APPENDIX G: EXPOSURE – USING FALSE COLOR AND ISO
NOTE: The following section uses a RED ONE camera display to illustrate exposure tools;
however, the same principles apply to RED DSMC camera systems.
RED DSMC cameras provide several advanced exposure indication tools. In the following examples, we
will show how these tools respond to a reference scene that is under-exposed, over-exposed and then
correctly exposed. Each scene will have its unique characteristics so the “correct exposure” is a matter
of judgment, balancing the desire to avoid clipping any highlights and also avoiding underexpose of
elements in deep shadow – which may therefore be prone to noise when developed in post production.
The following reference scene includes highlight and shadow elements and was shot at ISO 800.
UNDEREXPOSURE (~ 2 STOPS)
ISO 800 - Monitor Output
In the image above it is obvious the camera is under exposed. The initial clues are the monitor is very
dark, and the histogram is justified to the left. Also note that red bar at the left edge of the histogram and
the vertical color stack to the right of the histogram is only at grey. These indicators are saying a
significant amount of the senor’s RAW data is “in the noise” and that the peak level of the sensor’s RAW
data is at a very low level – in fact less than halfway.
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