Imager Tonemap

Use the tonemap imager to artistically modify the image's tone mapping using a filmic or a modified Reinhard curve.

Enable

Enables the imager.

Layer Selection

Selects layers processed by this imager with a glob or operator expression. An imager can use a selection to determine what nodes will be selected to be processed by the imager at render time. The selection is an expression that can consist of multiple selections concatenated by: 

• or (union)
• and (intersection)
• not (negation)
• and not (exclusion)
• () for nested scoping

Each selection uses glob patterns and regular expressions and a node will be processed by the imager if the expression matches the node name. By default, glob matching is used unless the selection is in a regex quote, i.e. r'<my_regex>'. For example:

specular or diffuse
 
not r'sss_(direct|indirect)'
 
r'color_(mask1|mask2)' or r'mask[34]'

Mode

Mode

Tonemap mode.

Filmic (default)	Reinhard

Filmic

Filmic Toe Strength 

Amount of curvature for the tonemap curve in the darker values.

0 (default)	0.5	0.9

0 (default)	0.5	1

Filmic Toe Length 

Amount of darker values affected by the toe.

0	0.5 (default)	1

^{_{toe_strength:0.5}}

0	0.5 (default)	1

Filmic Shoulder Strength

Amount of curvature for the tonemap curve in the brighter values.

0 (default)	0.5	1

0 (default)	0.5	1

Filmic Shoulder Length

Amount in f-stops of brighter values affected by the shoulder.

0	0.5 (default)	1

0	0.5 (default)	1

Filmic Shoulder Angle

Curve slope when white is reached.

0.1	0.5	1

0 (default)	0.5	1

Reinhard

Reinhard Highlights 

Reinhard photographic tonemap operator strength.

1 (default)	0.5	0

1 (default)	0.5	0

Reinhard Shadows  

Additional tone mapping control for darker values.

0 (default)	0.5	1

0 (default)	0.5	1

LUT

Filename

Specifies the LUT file to load.

No LUT	LUT (.cube)

Working Color Space

It is possible to specify a working color space here to convert to the specified space, apply the LUT, and convert to linear or rendering color space again.

Mix/Saturation/Gamma

Mix

0 preserves the input untouched and 1 applies the full node effect.

Preserve Saturation

Preserves color saturation for extreme bright values.

Gamma

Gamma curve exponent for midtones value control.

1 (default)	2.2	3