|HiRes supports three widely used transfer functions in addition to the simple
To the left are the curves of the functions that are used for converting from linear intensity values. These functions are well documented on the web, particularly at wikipedia.
sRGB is the default transfer function for all still images.
SMPTE 170M is the same function used in ITU 709, and the default for mpeg video.
As can be seen, sRGB closely follows the power function of 2.2, while the two SMPTE functions are very similar.
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