Things like camera intrinsics and extrinsics are not fixed. 1000 bytes seems small to me given the amount of processing in modern cameras to create a raw image.

Things like camera intrinsics and extrinsics are not fixed. 1000 bytes seems small to me given the amount of processing in modern cameras to create a raw image. I could easily imagine storing more information like focus point, other potential focus points with weights as part of the image for easier user on device editing.