2008

The lock button to the left of Pixel Aspect locks the pixel-aspect ratio.
When it is on, the Pixel Aspect spinner is replaced by a label, and you can't
change the value. This button is available only with the Custom format.
Images with different pixel aspects appear stretched or squashed on a monitor with
square pixels.
NOTE For standard NTSC on page 7863 , the pixel aspect ratio is 0.9. If you are
creating 16:9 (0.778) anamorphic images for NTSC, the pixel aspect ratio should
be 1.184. (As in the previous discussion of Image Aspect, this assumes the image
is not letterboxed.)
Options group
Atmospherics Renders any applied atmospheric effects, such as volume fog,
when turned on.
Effects Renders any applied rendering effects, such as Blur, when turned on.
Displacement Renders any applied displacement mapping.
Common Parameters Rollout (Render Scene Dialog) | 5935