Background
Shadows
Diffuse
Specular
AOVs

 

Background

Shadows

Shadow Color

Shadow Opacity

Backlighting 

Alpha Mask

Diffuse

Diffuse color

Diffuse Intensity

Use Background

Indirect Diffuse

Specular

Indirect Specular

Specular Color

Specular Intensity

Specular Roughness

Specular IOR

AOVs

A list of available AOVs available for the Shadow Matte shader. Each option creates a separate AOV render pass for that component. Note that the AOV must also be enabled in the Render Settings window.

Shadow

Shadow Diff

Shadow Mask

 


There may be areas visible in the specular reflections which are outside of the background plate; so called offscreen areas. This parameter defines the color used for these offscreen areas; you can link a texture for instance.

Offscreen Color found under Arnold attributes of image plane

Skydome Light Sampling

The Shadow Matte shader requires more than 1 sample to avoid noisy shadows. This is because it is computing a ratio of shadowed/unshadowed lighting, and to get a good estimate of that it requires multiple samples.