Realistic Background Editing for Photos

I will supply 50 separate photo sets, each containing multiple shots of the same subject. Your task is to remove the existing surroundings and replace them with a single, consistent studio-style backdrop per set—a clean, minimally decorated interior. The swap must look completely natural: lighting, shadows, colour temperature and edge detail (especially hair and semi-transparent areas) should blend so well that the change is undetectable to the casual viewer. You are free to use Photoshop, Lightroom, or any equivalent professional editor, as long as the final JPGs remain high-resolution and print-ready. I expect full-size layered PSD or TIFF files as working proof, plus flattened JPGs for delivery. Acceptance criteria • Each image shares the same minimalistic decorated interior within its set; different sets must not reuse the exact same scene. • No visible halos, hard cut-outs, or mismatched tones. • Native resolution preserved; no compression artefacts. Let me see a quick sample on one test image if you want to demonstrate your approach before we kick off the full batch.