Black and white documentary crime scene photo. A plain medium-sized men's black fabric backpack lies on a grey floor. The backpack is simple, completely clean, with no logos, no branding, and no prints. Next to the backpack is a white plastic forensic evidence marker tent with a bold black number "11" and a tiny metric scale at the bottom. Highly blurred and completely out of focus grey background, cinematic bokeh, shallow depth of field, 85mm lens, f/1.4, grainy monochrome film texture, dramatic overhead light, authentic police archive style --ar 4:3 --v 6.0
