3 - Photogram
A photogram is a cameraless photograph made by putting something on light sensitive paper &c and exposing the paper to light. Maholy-Nagy and Man Ray used to make these, man ray called them rayographs. This photogram was made using AZO paper a one of the last "silver chloride" papers made ( it was first produced in the 1800s ). I processed the paper in a coffee based developer.
i have been a freelance photographer since about 1988, shooting everything from weddings to portraits to site architecture / documentation. while i have and use digital cameras, i would rather my initial image be created using traditional materials. i use film and paper and glass and metal as negatives. i coat things myself with emulsion. in addition to silver based images, i also make iron based ones, called cyanotypes.