Basic Render with Arnold

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https://www.youtube.com/watch?v=KGGt5XG0QFM&list=PLbvsJz5ZcmxEWqGnexwVurzOM79BXntzv&index=3⁠

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Polish a display 3d object:

Delete history of all geometry before Group/Combine them

Select the Group in Outliner → Go to Animation tab → Visualize (top bar) → Create Turntable box → number of frames 150 (A TrunTableCamera is created in the group)

→

Change the perspective to the turntablecamera (now timeline makes a turntable animation)

Render Setting:

To Render Tab → Render (top bar) → Render Setting

Sampling suggestion:

Camera AA 6

Diffuse 3

Specular 4

Transmission 5

SSS 2

Volume Indirect 2

→

go to Render (top bar) → Render Sequence box → Choose current camera → Render sequence and close (image save in Image folder of Maya)

Type of Arnold Lights:

⁠

https://www.youtube.com/watch?v=YsMvrmO1WCQ&list=PLbvsJz5ZcmxEWqGnexwVurzOM79BXntzv&index=7⁠

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Area Light:

In attribute, LightShape tag, main control are intensity, exposure, and samples.

If tick normalize, light size/scale will affect the highlight/shadow area on object.

Light Shape as Disk, good for studio portray for rim light to separate background from foreground

Skydrome light:

Whenever use Skydrome HDRI light, go to its Attribute, set Color Space to Raw (avoid too much

contrast/overblow area)

If using as interior, also create a Light Portal → in Skydrome attribute, Portal mode: interior_only

Photometric Light:

For IES light (lamp light distributed in a room) setting/design, use this website for reference:

https://leomoon.com/⁠

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https://leomoon.com/store/shaders/ies-lights-pack/⁠

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In its attribute → Photometry File → choose the IES downloaded file

To reduce noise using IES light, move the photometric light away from nearby surface in the scene

Spot Light:

In its Shape attribute,

Light Effect → can tick Barn Doors if needed;

Decay Regions → tick Use Decay Region (for the light lose its energy per distance)

→

Spot light attributes → Decay rate: Linear/Quadratic → then adjust intensity of the light (more realistic as in normal life)

Go down the attribute menu → Arnold → change color temperature (different location than Area Light);

If increase the Radius (still in Arnold tab), it softens the shadow

Cone angle and penumbra angle: control falloff of the light

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