Cameras have always been marvels of miniaturization, but with the switch to digital technology, engineers have had to squeeze electronics and computers into camera bodies already filled with mechanical and optical components.
Most folks only see the outsides of cameras, but the insides can be works of engineering art, too. Canon's latest SLRs, the EOS-1Ds Mark III and EOS 40D, are a good case in point. Click on the thumbnails to uncover the story within each.
