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.
Different combinations of shutter speed and aperture used to achieve the same exposure. Shutter speed: Speeds faster than one second are shown as fractions (e.g.: â¦1/125, 1/160, 1/200, 1/250â¦). Some cameras may omit the numerator so that â1/125â becomes â125,â â1/250â becomes â250,â etc.