
Tone Panel
Tonal adjustments are most often used to make changes in the overall contrast range of an image, or to make changes to the placement of midtone values without affecting highlight or shadow values (or to make changes in highlight values without affecting midtone or shadow values, etc.).
Unlike most of the exposure and color balance controls discussed previously, which alter the analog signals of the CCD prior to digital conver- sion, tonal adjustments affect the digital transla- tion tables which convert the CCD’s “raw” lumi- nance data (expressed as EV on the horizontal axis of the graph) into “finished” brightness data (expressed as RGB units on the vertical axis of the graph).
Tone tab panel with the “Bent 6 stops” curve selected and static spot meters in effect.
Tone Curve Selections
ViewFinder™ is shipped with a selection of tone curves which have been preloaded into the Tone Curve
It is important to realize that changes to the Tone Curve (data translation lookup tables) often affect the camera’s expression of color, as well as its tonality. For example, when contrast is reduced with a Tone Curve change, the difference (in data values) between the bright areas and dark areas of an image is reduced, as expected, but this also reduces the difference (in data values) between the domi- nant colors and secondary colors in every colored
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