Lighting & Look-dev

The execution model is in blender-core. Render settings are in blender-rendering.

One call: presentation scene

scripts/turntable.py -- --objects Hero --rig studio --backdrop --frames 120 --lens 85
scripts/turntable.py -- --objects Hero --rig both --hdri //hdri/studio_small_09_2k.exr --hdri-strength 0.8

This builds a camera framed to the bounding sphere (on the narrower frame axis), a key/fill/rim area-light rig scaled to the asset, an optional 18%-grey cyclorama, and a pivot that orbits camera + lights + backdrop in a seamless loop. The asset itself isn't modified. Everything lives in the LD_Lookdev collection, and re-running replaces it. Set the render resolution before running, because framing depends on the aspect ratio.