She works in various fields in the photography industry: when she is not shooting commercially, she documents the monument preservation for the Cathedral of Cologne and organizes shows of individual pieces and full-scale exhibitions. Rumbach's views Polaroid film as her liberator; she has been addicted to instant film for over a decade because to her, "there are no rules with this medium." She feels freed from the conventions of contemporary photographic standards, allowing her to be centered only on her motives and photographic intuitions. Rumbach has used a variety of instant cameras, from medium format with Polaroid back to an SX-70 or SLR-680.