Check out these Aluminium Shutters images:
DSCN0316
Image by NelC
"Photo Sniper Camera"
"A Russian-made photographic gun consisting of a zenit reflex camrea body fitted with a fast-focussing 300mm telephoto lens attached to a gun tock with a pistol grip. The shutter is released by squeezing the trigger. The whole outfit comes in an aluminium carrying case, fitted with straps for use as a rucksack."
In the National Media Museum.
img_4505
Image by steevithak
Red berries
These were shot with a Canon 40D using aluminium foil over the lens mount. I poked a hole with a pin near what I hoped might be the center and started shooting. I cranked the ISO up to about 1200 and was able to use shutter speeds around 1/6 of sec.