This page provides information on the V-Ray Fresnel Map.
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The VRayFresnel can give a VRayMtl a stronger Fresnel effect on reflections than the Fresnel reflections option. Below is a simplified example to show how VRayFresnel changes the degree of reflectivity on a spherical object.
A VRayMtl is applied to both objects below, with different material setups. Where VRayFresnel is used, the front of the object (the part that faces the camera) is much less reflective than the sides of the object. The degree of reflectivity set by VRayFresnel affects both the reflected background and the reflection of the rectangular light source.
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