GigaPan Epic Pro User Manual page 24

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 rota-
tion for pitch ( up and down ).
2. Adjust the camera rail by loosening camera rail adjustment knob. Slide the rail
forwards or backwards until the entry 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 entry pupil is now aproximately aligned with the axis of rotation for yaw ( left to
right ).
Fine adjustments to the camera mounting platform for minimiz-
ing 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 dis-
tances, 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 visible 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 estimated
location of the lens entry 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 minimized the
parallax error for the yaw axis ( left to right )
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