Here's how: 1  Stand with your feet shoulder-width apart and knees bent slightly. 2  Lean forward, placing your hands just above your knees. 3  Round your back so that your chest is closed and your shoulders are curved forward.  Then arch your back so that your chest opens and your shoulders roll 1  back. Repeat several times.
Typically this count is between 100,000 and 300,000 shutter actuations, with the latter limit associated with the EOS-1D models. In fact, the Camera Shutter Life Expectancy Database is a really neat user-based site for DSLR models of several brands, including Canon.
Fujifilm instax 210 Instant Film Camera. The instax WIDE 300 Instant Film Camera is shaped like a DSLR with a large handgrip, and the shutter button and power lever ergonomically located on top of that grip. It also uses a ring around the lens to control its zone-focus system. The two motor-driven focus modes are 3.0-9.8' and 9.8' to infinity.