The following light filters are available in MAXtoA:

 

 

Light Filter Modifiers

Light Filters are available in MAXtoA as Light Modifiers. They are available when an Arnold light is selected: 

 

Modifiers give you the ability to copy and paste your Light Filter onto other lights, including instancing the modifiers to multiple lights. You can apply modifiers to Group objects containing lights by using Copy and Paste from a single light onto the Group object. The modifier is then instanced to all lights in the group, and controllable from the top-level group object. The four built-in light filters are included as separate modifiers: Decay, Barndoor, Light Blocker, and Gobo (also known as Projection). The fifth option, the 'Arnold Light Filter' modifier, allows you to place a custom light filter shader into the modifier:

Arnold Decay Filter Modifier added to Arnold Light