Artificial Rim Modifier

Make it look like light is wrapping around the edges of your products with Artificial Rim Modifier (ARM).

Here is a side-by-side with and without using ARM. The difference is subtle, but these are just the default settings.

Source

Ambient gets the color value from the color field under the ‘Environment’ Tab.

Color allows you to set any color, regardless of the rooms ambient color.

Rim Edge

This sets the start and end point of the rim effect.

• The ‘Start’ is any point on the surface of the mesh where the face ‘normal’ is perpendicular to the camera. For the sphere below this is the outer edge of the sphere.
• The ‘End’ is any point on the surface of the mesh where the face ‘normal’ is pointed directly at the camera. For the sphere below this is the center of the sphere.

The values set in ‘Start’ and ‘End’ bias the effect toward the start and end.

• ‘Start’ values greater than 0 push the effect closer to the ‘End’ and more of the ‘Source’ color of the Rim effect is revealed.
• ‘End’ values greater than 0 push the effect closer to the ‘Start’ and less of the Rim effect is shown.

Notice how when the start point is greater than 0, the rim is solid up to that value, then it begins the gradient until the end value.

Rim Multiplier

This is how strong the color of the rim is

Affect Emission

Whether or not the rim affects the emission of the object. This sphere has an emission map of swirls and the Rim Edge was set to Start: .29, End: .3 . Notice while off, the rim does not glow at all, but when on, it does glow

Affect Alpha

Whether or not the rim affects the alpha of the object. Notice while off, The green rim gets cut off by the hidden areas of the mesh. And while on, the green rim affects the hidden areas as well.