Autodesk 12812-051462-9011 User Guide 3 - Page 2515

HotSpot/Falloff group Angle Separation Locks the spotlight hotspot on page 8007 and falloff on page 8007 cones at the angle separation defined by the spinner (degrees). This option constrains the hotspot angle so that it can't equal the falloff and cause aliasing artifacts. Background group Don't Antialias Against Background Ensures that the edges of rendered geometry are not antialiased against the background. The inside of the geometry is still antialiased. Keep this control off unless you're creating sprites for game development, or require special compositing techniques because the background will not be rendered. In these cases, turning on this option helps avoid generating alpha antialiasing on the outlines of the geometry. Default=off. NOTE When Don't Antialias Against Background is on, render only against a black background. Filter Background Controls whether the antialiasing filter of the renderer affects the background image. See Plate Match /MAX R2.5/VIZ R2 Filter Types in Default Scanline Renderer Rollout on page 6141 for detailed information of filtering background and antialiasing. Use Environment Alpha Controls whether or not the renderer uses the environment map's alpha channel in creating the alpha for the rendered image. When off, the background is transparent. When on, the alpha of the resulting image is a combination of the scene and image alpha. NOTE Only background images with alpha channels or black backgrounds are supported when compositing in other programs such as Photoshop. Default Ambient Light Color group Click the color swatch to change the default ambient light on page 7906 color for renderings. This setting defines the darkest color for rendered shadows in the scene. Output File Sequencing group Nth Serial Numbering Specifies whether output frame files generated using a frame-step value other than 1 are numbered sequentially (on) or according to their true frame numbers (off). 7770 | Chapter 26 Customizing the User Interface