Wayne Martin Belger is an artist with a specialty of making photo cameras that include unusual components in the mechanism, often not for the squeamish. Below is a piece entitled Untouchable (HIV) and features a most novel way of implementing a color filter.
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Designed to study and photograph a geographic comparison of people suffering from HIV.
4″x5″ camera made from Aluminium, Copper, Titanium, Acrylic and HIV positive blood. The blood pumps through the camera then in front of the pinhole and becomes my #25 red filter. Designed to shoot a geographic comparison of people suffering from HIV.

More from the artist also known as Boy of Blue..