The Object Select Render Channel stores only the object(s) called out with a specific Object or Material ID.

This effect is reversible to create a render channel that excludes a particular object or objects according to Object or Material ID.

When rendering this channel out, it also includes a filter and alpha pass separately to help make it easier to use when compositing.

UI Path: ||V-Ray Node Editor|| > World > Render Channels > Matte > V-Ray Object Select

See the Render Channels page to find out where you can find these properties.

Channel Name – Customizable name for the render channel.

Enable Deep Output – Specifies whether to include this render channel in deep images.

Use Multimatte ID – When enabled, the pass considers the Material ID and renders accordingly. When disabled, these values are considered to be the Object ID.

Affect Matte Objects – Determines whether to include matte objects when generating the render channel.

Consider For Anti-Aliasing – When enabled, anti-aliasing is used where possible.

Denoise – Enables the render channel's denoising, provided the Denoiser is enabled.

Color Mapping – Applies the color mapping options specified in the Color Mapping rollout of the V-Ray tab in the Render Settings window to this render channel. This option is enabled by default.

Selection

IDs Selection Mode – Specifies the selection mode:

Single ID – Allows you to select only one ID to be included in the render pass.
Range IDs – Allows you to specify a range of IDs to be included in the render pass.
Custom IDs – Specifies a list of IDs included in this render pass.

ID – When the IDs Selection Mode is set to Single ID, you can specify that ID in this field.

Start ID/ End ID – When the IDs Selection Mode is set to Range IDs, you can specify a start and end value of the IDs.

IDs – When the IDs Selection Mode is set to Custom IDs, use this field to enter the IDs.

Invert Selection –  Uses the opposite of the selected objects in the render pass.