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CAD tip # 8068:

Question CAD
% platform category

Impact of LOGEXPPHYSICALSCALE on rendering (photometric).

The AutoCAD system variable LOGEXPPHYSICALSCALE defines the global value of relative brightness for self-illuminated materials in a photometric environment. Its logarithmic scale ranges from 0.001 to 200000.

The visual impact of this variable - using the defualt value 1500 and an increased value 5000 - is illustrated on the following pictures (wickerwork material and self-illuminated LED panel).

1500

5000

ACAD2012ACAD2010ACAD2008ADT

* CAD

28.6.2011 1674x

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applies to: AutoCAD 2012 · AutoCAD 2010 · AutoCAD 2008 · AutoCAD Architecture ·

See also:
Tip 8727:	Transparent 3D views in Revit.
Tip 8102:	Infinite library of rendering textures - Substance.
Tip 8070:	Rendering water surface in Revit.
Tip 7541:	How to record an AutoCAD walkthrough to an AVI file animation?
Tip 7362:	Background image/photo in a Revit rendering.

Selected tip: Hidden options in file menus in Windows Vista.

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