Camera Calibrations
The Camera Calibrations branch holds camera calibration profiles: the focal length, principal point and distortion coefficients of a camera and lens. A profile is added when an SfM reconstruction solves a camera, and when a photogrammetry project is imported with its cameras. Profiles are attached to a mesh's photographs with Attach Camera Calibration on the Photogrammetric Images menu, and they seed the calibration of later SfM runs with the same camera.
Select a profile to see and edit its parameters, described under Other Objects Properties.
Context menus
The branch header shows the standard group menu, and each profile shows the standard item menu. Both are listed on the Standard Item and Group Menus page.