2013

Table Of Contents

Controls the contrast level of the viewport when photometric lighting is

enabled (

LIGHTINGUNITS (page 1391) system variable is set to 1 or 2). Valid

range is from 0.0 to 100.0. The contrast level in standard lighting can be

controlled by the LINEARCONTRAST (page 1394) systems variable.

See also:

Standard and Photometric Lighting Workflow

LOGEXPDAYLIGHT

Controls if the exterior daylight flag is enabled when using photometric

lighting.

IntegerType:

DrawingSaved in:

2Initial value:

When this system variable is off, exterior daylight is turned off when

photometric lighting is enabled (

LIGHTINGUNITS (page 1391) system variable

is set to 1 or 2). When on, the exposure control algorithm in the rendering

acts as if there is an extremely bright light source in the scene. Therefore, the

default setting of “Auto” is tied directly to the sun setting. Under special

circumstances, it may be desirable to manually set this variable due to

extremely bright artificial light sources or, conversely, due to a sun-lit scene

that it is illuminated only by a small amount of directly visible sunlight.

Off0

On1

Auto, current sun status is used2