The Holga 135BC
camera is desired by art photographers the world over. Reminiscent of the Diana camera of the 1960s and 70s, characteristic vignetting focuses the viewer's eye and adds to visual impact. This version of the Holga differs from the standard version in that it features an internal mask which "cuts" the corners creating a soft vignetting effect. Hence, the name "Black Corner" version.
A Holga has four focus marks on the lens barrel. Simply rotate the barrel to the setting that most closely corresponds to your situation. Feel free to use your own setting that might fall between these icons.