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NameExpression
RGBA
C.*
Beauty AOV with all light paths
direct
C[DSV]L
Direct light from all surfaces and volumes
indirect
C[DSV][DSVOB].*
Indirect light from all surfaces and volumes
emission
C[LO]
Lights and emissive objects directly visible from the camera
background
CB 
Background emission
diffuse
C<RD>.*
Diffuse reflection
specular
C<RS[^'coat']>.*
Specular reflection
coat
C<RS'coat'>.*
Coat reflection
transmission
C<TS>.*
Specular transmission
sss
C<TD>.*
Subsurface scattering and diffuse transmission
volume
CV.*
Volume scattering
albedo
C[DSV]A
Albedo (reflectivity)
denoise_albedo((C<TD>A)|(CVA)|(C<RD>A))Denoise albedo
diffuse_direct
C<RD>L
Diffuse direct light
diffuse_indirect
C<RD>[DSVOB].*
Diffuse indirect light
diffuse_albedo
C<RD>A
Diffuse albedo
specular_direct
C<RS[^'coat']>L
Specular direct light
specular_indirect
C<RS[^'coat']>[DSVOB].*
Specular indirect light
specular_albedo
C<RS[^'coat']>A
Specular albedo
coat_direct
C<RS'coat'>L
Coat direct light
coat_indirect
C<RS'coat'>[DSVOB].*
Coat indirect light
coat_albedo
C<RS'coat'>A
Coat albedo
sheenC<RS'sheen'>.*Sheen
transmissionC<TS>.*Transmission
transmission_direct
C<TS>L
Transmitted/refracted direct light
transmission_indirect
C<TS>[DSVOB].*
Transmitted/refracted indirect light
transmission_albedo
C<TS>A
Transmission albedo
sheen_directC<RS'sheen'>LSheen direct
volumeCV.*volume
sheen_indirectC<RS'sheen'>[DSVOB].*Sheen indirect
sheen_albedoC<RS'sheen'>ASheen albedo
sssC<TD>.*SSS
sss_direct
C<TD>L
SSS and diffuse transmission direct light
sss_indirect
C<TD>[DSVOB].*
SSS and diffuse transmission indirect light
sss_albedo
C<TD>A
SSS and diffuse transmission albedo
volume_direct
CVL
Volume direct light
volume_indirect
CV[DSVOB].*
Volume indirect light
volume_albedo
CVA
Volume albedo

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Expression
ABA followed by B
[ABC]A, B, or C
((AB)|(CD))AB or CD
[^A]Any event except A
A*0 or more A events
A+1 or more A events
.Any event
'myevent'Custom event

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Custom Labels

BSDF lobes, BSSRDFs, and emission closures may be tagged with a custom label to output them to separate AOVs.

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