colour.models.log_encoding_ALEXALogC¶
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colour.models.
log_encoding_ALEXALogC
(x, firmware='SUP 3.x', method='Linear Scene Exposure Factor', EI=800)[source]¶ Defines the ALEXA Log C log encoding curve / opto-electronic transfer function.
Parameters: - x (numeric or array_like) – Linear data \(x\).
- firmware (unicode, optional) – {‘SUP 3.x’, ‘SUP 2.x’}, Alexa firmware version.
- method (unicode, optional) – {‘Linear Scene Exposure Factor’, ‘Normalised Sensor Signal’}, Conversion method.
- EI (int, optional) – Ei.
Returns: ALEXA Log C encoded data \(t\).
Return type: numeric or ndarray
References
Notes
Domain Scale - Reference Scale - 1 x
[0, 1] [0, 1] Range Scale - Reference Scale - 1 t
[0, 1] [0, 1] Examples
>>> log_encoding_ALEXALogC(0.18) # doctest: +ELLIPSIS 0.3910068...