Camera Distance

Choose how the calibration tool should calculate the standoff distance and the focal distance shown in the diagram below.

If there are multiple calibration planes, there is no choice. The Camera Distance line will be disabled and the software will calculate the camera distances automatically.

For a single plane calibration, if the camera is tilted 10 degrees or more, use method 1 below. Otherwise, the software will display a warning message that the distances may be inaccurate. In this case you should use method 3. Method 2 is provided for compatibility with old software versions.

1. Calculate Automatically

2. Override Focal Distance - This distance will be slightly larger than the focal length marked on the lens and depends on what distance the lens is focused at. The closer you focus the lens, the larger it will be.

3. Override Standoff Distance - Measure the distance from the calibration grid origin to the mid-point of the lens (half way between the end of the lens and the threaded opening on the camera).