Het Kleinste was formed (c.2019) by four individuals with a strong interest in analogue photography and darkroom printing. Come mid 2020, and Het Kleinste Kamertje found their base at De Nijverheid, in Utrecht. Their idea was to create a cozy space for people to develop their films and enlarge their negatives to prints. In addition to the craft of analogue photography, they were also idealizing the creation of a social environment. A community, where likeminded individuals can come and share their experiences, knowledge, and learn from each other. Essentially, find an analogue photography "gezelligheid".

Since then, Het Kleinste Kamertje has built a rapport of collaborations with De Nijverheid, De Voorkamer, Rietveld School, Catharijneconvent Museum, Aliance Francais, Setup, and other creative groups and individuals. Het Kleinste Kamertje has also hosted a series of social and educational events in the form of photowalks, screenings, workshops, and photobooths.

Currently, Het Kleinste Kamertje is working towards the becoming of a Stichting in order to expand their capacities as educators and a community. This is with the help of the community via a funding event.