Does the PBRT engine support setting camera internal parameters（K）?For example, pixel size, etc.

[qihang1019]

In learning, we need to use PBRT to simulate and render the imaging pictures of a real camera and know the internal parameters of the real camera ( by calibration or calculated by sensor size, pixel number, focal length, etc.). However, how to set parameters such as sensor size or internal parameters of the camera in PBRT?