Class Notes

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Week 7

Particles

1. Light source

2. Particles closest to light source (regardless of size are bright).

3. Particles in the mid ground (less brighter)

4. Particles furthest from light source, AND in this case closest to camera receive the least amount of light so they are dark & blurred (make them on a new layer and use Gaussian blur for effect)

The inverse would apply if light source was on the opposite end.

This technique is useful for sparks, rain, embers(they are their own light source) and floating things.

Lighting on different materials:

1. Leather surface

2. Smooth diffused/slightly reflective surface

3. Reflective surface

4. Glossy surface

1. Light source

2. Eye view

3. Specular light

*For a glossy object, the specular light sits in between, 1. the area most perpendicular to the light source and 2. the surface perpendicular of our eye view.

*A matte surface is the opposite, light is diffused, spread out. A matte object has more teeth or hills and valleys to its surface, hence diffusing the light.

*Our skin is similar, but when wet, the water smooths the surface of the skin, hence it picks up more light.

Reflective surface
1. Regular horizon line
2. Reflective horizon line. (reflective sphere causes the reflective horizon life to warp around)
3. Light source (sun)
4. Cast shadow (also shown in reflection)
5. Darker area around the sun (more visibility of space than surrounding atmosphere)

All objects are reflective, something that is more parallel to your eyesight will become reflective.

Translucency

We see translucency best from shadows( behind the surface that is being lit). Transluminosity in skin is saturated at the core shadow. The skin closer to the light become desaturated, like the baby's top head.

1. There is translucency here, but the underlying cartilage changes local color, where as in number

2. The underlying blood will turn the skin red.