Update metashape_utils.py

[henrypearce4D]

Changed the ValueError message when using a camera.xml that contains multiple sensors. Per-frame intrinsics can be defined, the previous message said that they were not supported.

[brentyi]

Looks correct to me!

[f-dy]

I don't understand: the previous message was correct, and it was triggered only when using several camera_model values in the metashape project (eg fisheye + perspective).

The limitation does not come from this utility but from nerfstudio itself, see here: "Per-frame camera_model is not supported." - which is exactly the sentence I used in the error message.

[f-dy]

@henrypearce4D @brentyi I think this should be reverted, as the new message is more confusing.

[brentyi]

Yeah, on a re-read the original error message makes sense. @henrypearce4D can you comment/confirm?

[henrypearce4D]

@brentyi -
@f-dy Is correct, it can be reverted perhaps with a little clarification added as another user recently mentioned this was a little confusing;

"nerfstudio does not support per-frame camera_model types."

"Only one camera type can be used: frame, fisheye or spherical (perspective, fisheye or equirectangular)."

[brentyi]

@henrypearce4D that sounds reasonable to me!