My simple beach scene. Basically a 360° cyclorama with a transmapped ground.

No HDRI pics anywhere. The background and sky are just a jpg set to 1.0 ambient value.

The ground is set up in the "normal" way with a procedural texture and a transmap to blend with the background.

First with a simple (yellow) infinite sun and a blue IBL.

The shadows under the car are very light.