ZED-M intrinsic parameters mismatch (SDK vs calibration_parameters_raw)

Hello Stereo Lab team,

We’re seeing a significant mismatch between the camera intrinsic parameters reported by the ZED SDK and the values returned by the API with the code when reading the raw (pre-distortion-correction) calibration parameters. Because the difference is large, we’re unsure which set of intrinsics should be considered the reference.

For context, we retrieve the raw parameters with:

zed = sl.Camera()
cam_info = zed.get_camera_information()
raw_left = cam_info.camera_configuration.calibration_parameters_raw.left_cam

Could you please confirm which intrinsics we should trust for calibration/undistortion, and whether any additional conversion/scaling is expected when using calibration_parameters_raw?

Thank you.

Hi @Mickyas
This support page explains what you are facing:
https://support.stereolabs.com/hc/en-us/articles/27824782212119-Why-is-there-a-difference-in-camera-parameters-between-the-ZED-SDK-API-and-the-ZED-Explorer-tool