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Maxwell Render 2.5 User Manual

Chapter 18. Appendix V. Glossary | 163

SL: Stands for Sampling Level. In Maxwell Render, this value controls the quality of the

render. The higher the sampling level reached, the more accurate the image.

Specular: Specular reection is the perfect, mirror-like reection of light from a surface,

in which light from a single incoming direction is reected into a single outgoing reection,

for example with a mirror. Specular reection is the opposite of diffuse reection.

SSS: Stands for sub-surface scattering, an effect whereby light penetrates the surface

of a translucent object, is scattered by interacting with the material under the surface,

and exits the surface at a different point. Inside Maxwell Render, SSS is important for the

realistic rendering of for example marble, skin and milk.

Studio: Previously known as Maxwell Studio or MXST. It is an independent application

within the core components of Maxwell Render. Studio allows users to import objects in

different formats, create/ edit/ apply materials, and set up lights and textures. Studio

can then send the scene to Maxwell.exe to be rendered. Studio is not a modeling

application and needs existing geometry to work with.

Turbidity: Turbidity is a cloudiness or haziness of water (or other uids) caused by

individual particles that are generally invisible to the naked eye.

Unbiased Rendering: The method of rendering which, contrary to biased rendering,

does not use interpolation or guessing of the samples taken to render the image. Unbiased

rendering avoids the typical interpolation and aliasing artifacts associated with biased

rendering. This is the method of rendering used in Maxwell Render.

Vertex: In geometry, a vertex is a point formed by the intersection of the segments of

the object: a vertex of a polygon is the point of intersection of two polygon edges. Plural:

vertices.

Vignetting: In photography and optics, vignetting is a reduction in image brightness in

the image periphery compared to the image centre. It can be controlled using Maxwell

Render’s SimuLens parameters. Wide-angle lenses (with a focal length of around 24mm)

will produce more vignetting compared to larger focal length lenses. After a certain focal

length (around 80mm) the vignetting effect is no longer noticeable.

Watts: The Watt is the SI derived unit of power, equal to one joule per second. Watts

species how much electricity a light source consumes.

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