why scaled_focal_length need to be divided by img_size?

[APeiZou]

@geopavlakos @shubham-goel Hello, why scaled_focal_length need to be divided by img_size in demo.py?

[geopavlakos]

That should not be necessary. The rendering would work for other focal length values, but you want a relatively large value for scaled_focal_length to get a better aligned mesh.