In iTwin Capture Modeler, it is possible to export and import the optical properties of the camera. This article gives you the way to do this.

Steps to follow

Export optical properties

You can export them as a file * .opt by right-clicking your aero-triangulated photogroup.

Import optical properties

You have performed a calibration (calibration) of the camera and you know precisely the distortion of your camera.

Parameters

You can first import them as a file * .opt by right clicking on your photogroup, before submitting the AT.

Then, in AT settings, set the default parameter to "Keep" in the rules of distortion estimation.