Tony The Tiger
I use a Canon EOS Digital Rebel T4i. It shoots five frames per second in the continuous shooting mode. I went to a basketball game last Thursday and shot 1416 pictures and the battery level had not moved down to the medium power level. As I understand it the camera only uses the motor to focus for the first shot in a continuous shooting sequence. Since I often used continuous shooting mode, I estimate that the camera only focused about 150 unique times. I had been told that the battery would last for about 1200 shots, but I think that assumes that the camera uses the motor to focus for each individual shot. What percent of the battery use is from the motor focusing and what percentage is from the shutter release and other picture-taking activities? How long should the battery last if I only focus for one in ten shots?