The block is affected by a spherical effect after AT I have a problem when importing my XLS-blockfile
The user acquired a nadir aerial dataset and did follow a specific calibration step
An Aerotriangulation was submitted, the distortion parameters were computed and Photogroup oriented, but the result was not acceptable.
This kind of dataset results in a spherical deformation due to distortion parameters inaccuracy.
https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/25556.export-import-camera-optical-properties