A series of photographs using a Holga PinHole camera. The photographs are taken on 120 B&W film 2 1/4 x 2 14 inch negatives. Scanned, toned sepia and edged with PhotoGraphic Edges.
The pinhole is F215 and the only technical variables is Exposure Value and shutter speed. The film speed influences the Exposure value which when you take the amount of light into consideration gives the shutter speed.
I use film speed in calculations when I want to show movement, especially people, otherwise it is all about composition.