9.5.2

724 • CHAPTER 13
RENDERING • RENDER SETTINGS • 725
X Default Resolution, Y Default Resolution
These settings dene the output resolution of the QuickTime VR movie. The default value is 320 x 240
pixels. The resolution of the original material from which the QuickTime VR movie is nally rendered is
dened by the Resolution setting on the Output page. The Y resolution of the original material should
be at least 1.6 times greater than the Y Default Resolution setting.
Apple recommends:
These are Apple’s recommended settings (from ‘The QuickTime FAQ’):
 Use focal lengths of 15 mm, 28 mm or 35 mm.
 Do not use sh-eye lenses.
 For interior shots, use a 15 mm lens. This gives you a vertical visibility range
of 97°.
 Use a 15 mm lens. This lets you reduce the number of shots in one pan to
12.
 If you are using 35 mm lenses, create additional rings for the view upward
and downward.
 For determining the number of frames in a horizontal ring, two adjacent
frames should overlap by 30% to 50%.
For a QuickTime Object Movie, place the object at 0,0,0 (world coordinates)
and ensure the object is selected in the Object manager.
If Generate is set to VR or Both, you will create a QuickTime Movie of all frames
in the sequence.
When you render QTVR panoramas and QTVR movies, the following limitations
apply with regard to antialiasing:
The Max Level parameter determines the maximum antialiasing for colors and
edges.
The Max Level cannot be exceeded, even if higher settings are specied in
Compositing tags. Compositing tags work within the Min Level to Max Level
range only.
The render time depends largely on the Max Level setting. For this reason,
avoid using a setting higher than 4x4.
Movie Formats
Common movie formats are listed below.