9

Pseudo Color Exposure Control 301
A display of illuminance shows that it is the same for all three
spheres.
A display of luminance shows that the two spheres on the left
reflect about the same amount of light, but the darker sph ere
on the right reflects little light except for its highlight.
See also
Environment Panel (page 3–272)
Inter face
Display Type group
Quantit y—Chooses the value being measured.
• Illuminance (the default) displays values of
light incident on surfaces.
• Luminance displays va lues of light reflected off
surfaces.
Style—Chooses t he way to display values.
• Colored (the default) shows a spectrum.
• Grayscale shows gray tones that range from
white to black.
The spectru m bar displays the values the
rendering will use.
Pseudo color display st yle:
Left: Grayscale
Right: Colored scale
Scale—Chooses the technique used to m ap values.
• Logarithmic (the default) uses a logarithmic
scale.
• Linear u ses a linear sca le.
The Logarithmic scale is useful when the
illumination of the surfaces of interest is low
compared to the maximum illumination in the
scene.