Faded Sepia Wet Collodion Portrait

Transform this photo into a mid-1800s wet collodion plate photograph. Apply heavy sepia toning with visible chemical staining at edges, soft vignetting, slightly uneven exposure, and the characteristic shallow depth of field of large-format lenses. Keep the person's face and expression identical. Background should appear as a painted studio backdrop with slight texture. Add subtle scratches and dust marks on the plate surface.