It's not inconceivable that a conventional camera could work here, although it is borderline. Quick napkin math: Sony A7RV produces 9504x6336 pixel images from

It's not inconceivable that a conventional camera could work here, although it is borderline. Quick napkin math: Sony A7RV produces 9504x6336 pixel images from 35.7x23.8mm sensor, resulting roughly 266 pixels/mm. With a 2x macro lens (Laowa has some), it would mean that 0.2mm subject would be 266x0.2x2=106 pixels across. Not exactly HD, but possibly still usable.