Also, did you know that.......

Cameras and guns share a common history – in the early days of cameras being manufactured, some dry plate cameras were explicitly modelled on Colt revolver mechanisms, and the design of cinema cameras was modelled on machine guns. Closer still, when William Walker and George Eastman of Kodak developed a new paper negative, it used guncotton. This was expanded upon by a French inventor who created a gelatinised guncotton that could be cut into trips, which in turn permitted the first modern smokeless fun powder. Later on, amyl acetate was added to this, as well as nitroglycerine and acetone. So essentially, at the time, cameras and guns both contained the same sort of chemicals in their cartridges. 

Wow! Scary! Maybe that is why they call it a photo shoot. hehe