Global Tonemapping Operators v1.5

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Contributor: Thomas Mansencal
Implementation of various Global Tonemapping Operators
9.0, 8.0, 7.1, 7.0, 6.3 or later
Linux, Mac, Windows
25 Nov 2018



The attached file is a playground for implementation of various Global Tonemapping Operators. They are available as groups and can be copy / pasted quickly from the file to another.


The following operators are currently implemented:

  • Simple
  • Normalise
  • Gamma
  • Logarithmic
  • Exponential
  • Schlick (1994)
  • Reinhard (2004)
  • Filmic

Examples with the following source image:


Because Nuke is unable to perform realtime computation of image average, min and max values, some operators need a domain precomputation.


More information is available in the following IPython Notebook:


Latest version of the file will always be available at this url:

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0 # Mads Hagbarth Damsbo 2015-06-08 14:04
Really really cool!
There is a bug in the Reinhard implamentation.
I guess it is some left over code.

In the I_a_tonemapping _operator_Expre ssion there is a unused expression variable that throws a error. It should be removed.
0 # Thomas Mansencal 2015-11-15 07:35
Thanks for reporting! This should have been fixed in the latest version.
0 # Kamil Grzelak 2016-07-19 14:22
Hi Thomas,

I'm having problems with displaying properly image after conversions. Can we contact somehow ex. e-mail?
0 # Ali Ismail 2017-06-20 09:39
Exactly what I was looking for. Thank you so much!

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