Light sources do not seem to work correctly. Performed tests with completely indoor scenes that receive no lighting from HDRI or the “Sun.”
The problem is that after tuning off visibility or even deleting a light source, the scene continues to be lit. One potential fix is to move the whole model somewhere else, after which it once again becomes completely dark. Adding a light source once more causes the same problem.
Keeping the scene still, and even generating a render still has the scene lit with no light sources.
The only way to get the scene dark again is to move it’s coordinates (in sketchup or d5, both work), or save, close, and re open. Regardless of which method is used, the problem still comes back.
More testing reveals extra inconsistency. Leaving the viewport still, and sometimes the “phantom” light/illumination seems to become more dim.
This may be related to auto exposure, as using manual exposure produces different results. At 0 EV, the scene is almost completely dark, but some faintness remains. Raising the EV higher reveals more “glow” as if some materials are self emissive when they shouldn’t be.
Hi, it’s a known issue we are still fixing, and sorry for the inconvenience. As a workaround, please try turning off Realtime when in Preview mode( on the right-top corner), then move your camera to see if it will work.
Thank you for the reply. Nice to know that the issue is acknowledged and aware of. I will try and see results with realtime turned off, but I don’t expect any magic. Last I remember, the phantom light source affects the final render.
The same thing happens to me. It seems that even after removing all light sources in an interior scene, the “lumens” of the scene get stuck and don’t update — or the global illumination gets stuck. It has nothing to do with auto exposure. It’s really a calculation error. And even when you render, it calculates based on what’s in the viewport. I did some tests, and it only resets if you toggle path tracing off and on.The same thing happens to me. It seems that even after removing all light sources in an interior scene, the “lumens” of the scene get stuck and don’t update — or the global illumination gets stuck. It has nothing to do with auto exposure. It’s really a calculation error. And even when you render, it calculates based on what’s in the viewport. I did some tests, and it only resets if you toggle path tracing off and on.
Can you record your process and share it with us? Deleting a light source on my end has a 1-3 second delay for the preview window to catch up, which is normal.
