Imager Tonemap

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

Mode

Tonemap mode.

Filmic (default)	Reinhard

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 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

Preserve Saturation

Preserves color saturation for extreme bright values.

Gamma

Gamma curve exponent for midtones value control.

1 (default)	2.2	3

Selection

Render

Specifies if an imager is effective only in the IPR, only in batch (e.g. Render to Picture Viewer, Commandline render, Team Render) or both. For example, you can add imagers only to the IPR for look development, but turned off in the final render. Or vice versa, an imager may be slow or not required in the IPR, but turned on in the final render.

Drivers

Specifies if an imager is assigned to all drivers or just the selected ones.

AOVs

Specifies which AOVs are affected by the imager.

• all: All AOVs are affected.
• beauty: Imager is visible only in the beauty.
• expression: Imager is applied to AOVs selected by this expression. For example, to select the diffuse_direct and diffuse_indirect AOVs, write diffuse_direct or diffuse_indirect. Or write diffuse_* to select all AOVs start with 'diffuse_' prefix.

Expression

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]'