Add note to "colour.models.log_decoding_CanonLog3" definition.
@@ -258,6 +258,19 @@ def log_encoding_CanonLog3(x, bit_depth=10, out_legal=True,
numeric or ndarray
*Canon Log 3* non-linear data.
+ Notes
+ -----
+ - Introspection of the grafting points by Shaw, N. (2018) shows that the
+ *Canon Log 3* IDT was likely derived from its encoding curve as the
+ later is grafted at *+/-0.014*::
+
+ >>> clog3 = 0.04076162
+ >>> (clog3 - 0.073059361) / 2.3069815
+ -0.014000000000000002
+ >>> clog3 = 0.105357102
+ >>> (clog3 - 0.073059361) / 2.3069815
+ 0.013999999999999997
+
Examples
--------
>>> log_encoding_CanonLog3(0.18) * 100 # doctest: +ELLIPSIS
