The appearance of all the materials changes based on their properties. Thus, the properties of a material helps to determine the material's settings in a 3D modeling program, such as with 3Ds Max Studio. Designers achieve photorealistic rendering when the output from the settings matches their product vision. Though this was my first rendering and lighting experience with 3Ds Max, the renderings resulted in high quality photo-realtistc 3D Models. The experience and outcome was extremely enriching.
Differences in Materials based on object properties:
The materials differ because of their compositions. Properties of glass give it transparency, depth, contrast in highlights and lowlights, and visible back shadows, while still preserving a contoured appearance. The characteristics of chrome result in a material that is metallic, highly reflective, exhibits a high contrast, and mirrors surrounding objects. When glossy, plastics have a highly reflective surface for lighting , but
don't work well for mirroring other objects because of the chemical composition of polymer molecules. An abundance of light washes out the color of the material, giving more drasticly highlighted areas. A translucent plastic, such as plastic film, appears to be a lightweight material. The contrast of light and dark is extremely subtle, so unlike glass, plastic film doesn't exhibit a greater depth, but appears to be lightweight. The last material, brushed nickel, is less reflective than chrome because of its non-polished finish. This finish creates much more contoured highlights on the materials surface, unlike the spotted high lights of chrome.
Brushed Nickel
Glossy Plastic
Transparent Glass (Physical)
Translucent Plastic Film
Materials Side by Side Rendered Views (Ambient/Spotlight Lighting):
Rendered with Ambient Light, Default Material Settings
Rendered with Spotlight, Default Material Setting
Rendered with Spotlight, Reflection Transparency changed to 2 for Metals
When compared to ambient lighting, spotlighting created the most dramatic rendered results. The color is richer. The shadows are more distinct and even display the color of the object, as with the glass material.
In the last image, I increased the reflection transparency of the metal objects to 2. As a result, the materials rendered a much more polished finish. This change in material's property settings would work well for designer who works with rendering inflated metals (Fig. 1). Therefore, material settings change based upon the envisioned object(s) that designers plan to photo-realistically represent.
Fig.1
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