This test concerns sunsky or ibl samples. (PVR means PhotoVideoRendering plug-in)

aerial view
ibl samples 0 (PVR-1.1)
ibl samples 64 (PVR-1.1)
ibl replaced by sunsky samples 12 (PVR-1.0 or standard photo panel)

virtual visit
ibl samples 0
ibl samples 12 (PVR-1.0)
ibl samples 64 (PVR-1.1)
sunsky samples 16 (PVR-1.1)