Photographing a group of people on large format wet plate needs a lot of power. Even with a relatively wide f/5.6 aperture, with an ISO of around 0.5 that still needs a lot of light. How much light? Well, around 7500 watt-seconds to be precise.
That’s how much power photographer Markus Hofstätter used for this group portrait of Austrian rock band The Black Proteus. Although, surely being photographed on wet plate makes them a metal band now?