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22
GigaPan Pro User Guide
Approximate adjustments for minimizing parallax error
1.
Adjust the height of the camera by loosening the two platform thumbscrews on
the EPIC Pro arms. Move the camera mounting platform up or down until the
midpoint of the camera lens is located at the same height as the thumbscrew and
the axis of rotation for pitch ( up and down ).
2.
Adjust the camera rail by loosening camera rail adjustment knob. Slide the rail
forwards or backwards until the entrance pupil of the lens is at the same position
as the middle of the arm where the platform thumbscrews on the EPIC Pro arms
are located. The entrance pupil is now approximately aligned with the axis of
rotation for yaw ( left to right ).
Fine adjustments to the camera mounting platform for
minimizing parallax error
Note: The approximate adjustments described above are sufficient for most instances.
However, sometimes it may be necessary to make the following fine adjustments and
work the extra time and effort.
1.
Find two objects in your scene that are adjacent to each other and at different
distances, such as two trees at different distances or a window frame and a door.
You will use these two objects to accurately repeat images at two angles with the
camera rail adjusted at different points.
2.
Place two additional objects that will help you consistently position the EPIC Pro
at different angles. You might use two chairs and use the back of a chair just vis-
ible at the left side of the viewfinder to repeat two angles.
3.
Loosen the knob underneath the camera rail and move the rail so that the esti-
mated location of the lens entrance pupil is located at the midpoint of the EPIC
Pro arms, which is the yaw axis.
4.
Determine the position of the camera rail using the millimeter markings on the
rail.
5.
Measure the distance between the two objects at the two angles for different
positions of the camera rail.
6.
When you find the position of the rail where the distance between the two objects
changes the least number of pixels at the two different angles, you have mini-
mized the parallax error for the yaw axis ( left to right )
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