Seth Milchick spends a good portion of social events in Macrodata Refinement snapping photographs of the MDR staff in Season 1. The camera he uses, like many items on the Severed Floor feels very retro and analogue.
The photographs we see him take throughout season 1 are featured in the big spinning portraits of Helly R. and her team in MDR at the Lumon's Eagan Family Gala from episode 9.
The credited photographer for those shots is Atsushi Nishijima.