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.
4. Use the Shutter Speed Priority Mode. Motion blur is all about shutter speed. To bring out the motion in the backdrop and keep the subject in focus, start with a shutter speed of 1/200th of a second and slow down gradually depending on the results and the speed of the subject.This will help you to determine the optimum shutter speed for motion blur in those conditions.o bring out the motion in the backdrop and keep the subject in focus, start with a shutter speed of 1/200th of a second and slow down gradually depending on the results and the speed of the subject. This will help you to determine the optimum shutter speed for motion blur in those conditions.