d7b7938706
The motion tracking always operates with horizontal sensor mapping, but conversion code form tracking camera to Blender camera was not setting the sensor fitting to Horizontal (Python code was leaving sensor fitting unchanged, C code was setting it to Auto). Additionally, the Python code was not handling camera shift, making it so non-centered optical center was not handled correctly. The reason why the code is written in two places is because C code is used when conversion from tracking camera to Blender happens after solving the motion, and the Python code is used for the "Setup Tracking Scene". It is possible to unify some code, but it is not that much of an importance at this time. Pull Request: https://projects.blender.org/blender/blender/pulls/114253
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