Nadir

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The point directly below the person viewing or below the camera. The opposite (above) point is named [[Zenith]].
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The point directly below the person viewing or below the camera (set a Pitch of -90 degrees in PanoTools). The opposite (above) point is named [[Zenith]] and has a Pitch value of (+)90 degrees. The horizon or equator is inbetween and has a Pitch of 0 degree.
  
 
The Nadir is streched to a line in [[Equirectangular Projection]] hence it is hard to edit it directly. However, a [[Rectilinear Projection|rectilinear]] view can be [[Extracting and inserting rectilinear Views|extracted]] for editing.  
 
The Nadir is streched to a line in [[Equirectangular Projection]] hence it is hard to edit it directly. However, a [[Rectilinear Projection|rectilinear]] view can be [[Extracting and inserting rectilinear Views|extracted]] for editing.  
  
The Nadir usually gives much more problems than the Zenith because there either is a tripod to cover or there are [[Parallax]] errors to edit. An usual way to solve this problem is to use [[Tutorials#Tripod_Caps|Tripod Caps]].
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The Nadir usually gives much more problems than the Zenith because there either is a tripod to cover or there are [[Parallax]] errors to edit. Objects at the nadir tend to be much closer to the lens and therefore errors in the setup will more likely be detectable in this part of the picture. One possible way to solve this problem is to use [[Tutorials#Tripod_Caps|Tripod Caps]].

Revision as of 11:37, 13 May 2005

The point directly below the person viewing or below the camera (set a Pitch of -90 degrees in PanoTools). The opposite (above) point is named Zenith and has a Pitch value of (+)90 degrees. The horizon or equator is inbetween and has a Pitch of 0 degree.

The Nadir is streched to a line in Equirectangular Projection hence it is hard to edit it directly. However, a rectilinear view can be extracted for editing.

The Nadir usually gives much more problems than the Zenith because there either is a tripod to cover or there are Parallax errors to edit. Objects at the nadir tend to be much closer to the lens and therefore errors in the setup will more likely be detectable in this part of the picture. One possible way to solve this problem is to use Tripod Caps.

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