A good example of this would be to look at an old CRT monitor, where the viewing panel is glass. Most materials except metals have a Fresnel reflection, making the reflection strong at glancing angles but weak at more front on angles. White reflects the entire visible colour spectrum whereas black absorbs all colour. Polished marble (Depending on colour), 30 - 70 %ĭiffuse colour also affects the reflection intensity.However the following can be used as a guide.īy default the reflection colour acts as a filter for the diffuse colour and the stronger the reflection colour the dimmer the diffuse colour. You would commonly use a grey scale value to determine the reflection strength and there is no right or wrong value so you will have to take your best judgement. By using colour instead of grey scale you will get coloured reflections. White RGB (255,255,255) is fully reflective and black RGB (0,0,0) is not reflective at all. Like diffuse it uses a colour value to determine the reflection strength.
The light rays are bouncing all over the place, and not being absorbed.Ĭan be used to simulate dust on a surface by controlling the way the surface reflects direct light. If you render an object that is pure white or pure black you will notice that there is no contrast. When creating a white or black material, set the colour values to an off white RGB (245,245,245) / black RGB (2,2,2). It is important to understand that no material in the real world is pure white RGB (25,255,255) nor pure black RGB (0,0,0). This is the actual colour of the surface, reflection and refraction colours can affect the visual appearance of this colour. A more in depth look at each setting within a Vray material for version Vray 2.0.
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