3Ds Max lighting
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Three key concepts in 3Ds MAX lighting are: 1. Intensity, direction, and diffuseness are properties of light that determine how light spreads and illuminates surfaces. Shadows are cast by objects blocking light, not by lights themselves. 2. Three-point lighting is a basic lighting setup that illuminates a scene using a key light, fill light, and highlight. The key light is the primary light source, the fill light reduces shadows, and the highlight adds depth. 3. Ambient light and IES skies/suns are used to simulate indirect lighting and realistic outdoor lighting conditions, though creative lighting is also possible.
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3Ds Max lighting
- 1. 3Ds MAX lighting; concepts and techniques BY: RANDHIR PRASAD YADAV
- 2. Properties of Light Intensity/Luminosity Intensity and luminosity are similar concepts. The following two images illustrate the difference.
- 3. Direction
- 4. Diffuseness In general, diffuse light is any light that has been scattered after leaving the light source, or any light source that has a varying area of luminosity or intensity. Scattering can be caused by atmospheric gases or by reflection, or bounce, off an uneven or rough surface.
- 5. Shadow Shadows are not technically a quality of light. While some may teach that lights cast shadows, in fact it is objects that cast shadows. A shadow is the absence of light and therefore cannot generally be considered a light quality.
- 6. Contrast Contrast refers to the range of difference between the lightest parts of the image and the darkest parts. An image in which the lightest parts are much lighter than the darkest parts is considered to have high contrast.
- 7. Size
- 9. Time of Day
- 10. sun
- 11. skylight
- 16. Reflectivity and Diffuse Color
- 17. Luminosity
- 20. The key lighting a scene is the primary source of light. It can be any light source from any angle. It is the that provides primary illumination. Sunlight is an easy example.
- 21. The Fill Light Fill light does two main things. Most obviously, it illuminates areas that are shad-owed from the key light. It also usually illuminates all the areas that are lit by the key light, or at least some of them where the key light and fill light overlap on a surface. In other words, in a situation with a key light and fill light, the shadows are illuminated by the fill light and the unshadowed areas are illuminated by the key light and the fill light wher-ever they overlap.
- 22. The Highlight The highlight is also known as the top light, the back light, the tip light, and the rim light, depending on where you learned your lighting. Its pri -mary purpose is to make an object stand out from its background, to help define the shape, and to provide a nice, defined edge for those nasty green-screen or blue-screen shots.
- 24. Three-point lighting is a simple, versatile, and powerful method of pro-viding an immediate “beauty” lighting scenario in which most elements are likely to be visible and attractively lit. The key light provides primary illumination, the fill light provides form and shadow fill, and the highlight provides dimension. Three-point lighting using spotlights is also extremely fast to render with shadow maps. No scene or lighting analysis is necessary, and the artist can import a generic three-point lighting rig from a prepared scene any time, scale the rig, and start a render. What Is Great about Three-Point Lighting
- 25. Ambient Light Ambient light doesn’t exist in the real world, although it is meant to approximate some lighting behavior we see every day. In the real world, light reflects from one surface to the next over and over, perhaps mil -lions of times, until all the light energy has been absorbed. This is known as radiosity. Radiosity has the effect of giving an overall brighter appearance to any environment and occurs everywhere all the time.
- 26. IES Sky “IES” refers to the Illuminating Engineering Society. Wherever you see these letters, it means a bunch of physicists have gotten very picky about the light behavior, and while you may not even notice the differ-ence or it might not seem to work the way you’d like, don’t worry—at least it’s physically accurate.
- 27. IES Sun IES Sun is another photometrically accurate lighting instrument and is intended to be used with IES Sky for outdoor lighting environments. Once again, being the creative people we are, we certainly aren’t obliged to use the tools exactly as directed. I can throw an IES sunlight and an IES skylight together any time I want without using the Daylight Sys-tem and I will probably never be jailed for it.