Inspiration from many places.

[Mike1158]

This problem has something to do with the ground plane/Horizon.

Annoying.

[Mike1158]

There is a problem with the extremes of the infinite plane and horizon matching somewhere. I have reinstalled Twilight, waiting for the next round of issues to occur.

[Mike1158]

Whatever I do and no matter how many different hdri, that I try. The infinite plane chops the hdri off at the horizon, or the non hdri image on the plane at the horizon or whatever way you see it. Any clues or guidance folks?

[Mike1158]

OK, no infinite plane and the horizon issue is gone. Admittedly the floor shows the ground plane shadow catcher but while the hdri looks OK but that motor, down to kiddie car size so the beat goes on. Be very careful of the orientation of the shadow catcher texture (HDRI JPEG version).

More from this sometime not now.

[Fletch]

Using infinite plane for this purpose is not suggested.

[Mike1158]

I got there testing different areas.

In this I had some problems with scale. The car ended up looking like a kids to so have in this iteration enlarged the car to 150%.

No shadow catcher issues, not an infinite plane.

May well try at 175%.

[Fletch]

May well try at 175%.

keep working it, you'll get there.

[Mike1158]

Thanks Fletch.

[Mike1158]

Revisitig this one, I have introduced Sergio's Corvette and scaled it to +10 which with this hdri seems about right.