Hello? Is anybody out there? Does Adobe monitor this forum?
Sorry for the delayed answer, I was away from my computer yesterday. I spoke with the moderation team and learned the reviewer accidentally clicked the wrong rejection reason on this file. The noise and lack of overall sharpness was the reason the file had been rejected so they would normally have selected either "technical reasons" or "artifacts." I apologize for the confusion.
Overall sharpness? I can't make something sharp that wasn't sharp in the first place. These are shadows that were cast onto a painted surface. The painted surface had some light texture. The shadows were from 50 year old dusty curtains that were hanging in an old farmhouse. The light that was projected on the wall was filtered through the weave of the material and dust. When you looked at the shadows on the wall, they lacked sharpness with the naked eye. I guess I can stop submitting shadow photos. The rejection rate will be well above 50% based on this one issue alone.
I can't say that I see the noise issue that you are referring to. Its not an overly high ISO shot. Noise reduction was used in Lightroom.