Thank you for your response and for suggesting that I submit an enhancement request. I have now submitted the request through Feedback Assistant: FB25180862 — Provide Documented Viewing-Ray Geometry Metadata for iPhone Camera Panoramas The request describes the need for documented pixel-to-viewing-ray geometry, including gravity-referenced vertical orientation and any geometric transformations applied to the finished panorama. I appreciate your offer to help route this request to the appropriate engineering team. Please let me know if additional technical information or sample panoramas would be useful. Thanks again for your assistance.

Thank you very much for the helpful response. This confirms what I had been finding regarding the lack of documented panorama geometry, and I appreciate the suggestion to file an enhancement request. I will do that, although it may be a week or so before I have an opportunity to put the request together carefully. Once I have filed it, I'll post the Feedback number here as you suggested. Thanks again for your help.