Realism, photo, still life, metal, sci-fi

Prompt

2x2 grid; each panel is a whittled wooden tabletop automaton mounted on a book-shaped base, with characters and elements from 4 random sci-fi books driven by a side crank with exposed cams and linkages. Style: Premium studio macro product photography, crisp micro-scratches on brass pins, clean wood joinery, neutral softbox lighting, medium shallow depth of field, 50mm perspective, seamless background in warm light gray.