Act-3D Quest3D Viewer is a viewer utility program that is essential for accessing and viewing projects published with Quest3D 3.0e or earlier versions. All websites and other projects created with Quest3D 3.5, or newer, as well as standalone executable 3D viewers, do not require this viewing program. Corresponding websites will install the viewer automatically, but also works on a PC with Windows 98, Windows ME, Windows 2000, Windows XP or Windows Vista. Moreover, it requires DirectX 9.0c, or newer version, 128 MB system memory, a DirectX 9 supporting graphics card, and 200 MB free hard disk space. Quest3D allows the creation of “fly-throughs†in real time with the use of models and other materials, including lighting effects and environmental details. This creates the effect of having a virtual camera with “High Dynamic Range†that simulates real world properties of cameras, including the characteristics of color film, bloom and glare. Materials are simulated with many of their properties, including surface area (smooth, bumpy, etc), colors (vivid and deep), reflections, opacity, and shades.