<span style="font-size: medium;"]I just finished my 5-day LA trip and got back home. I took my 50D with grip and TWO fully charged Canon like new genuine batteries with me. The camera has taken about 600 pictures, no live view used. There're some picture review time on the camera with LCD brightness set to 7, no continuous shooting and almost no flash use, little IS usage which can be ignored. But the batteries are now dead.


<span style="font-size: medium;"]How come a single BP511A battery on the 50D is said to have 640 shots of capacity? I don't see any major difference between the way I use the camera and the way anyone else does. Is any one here getting the battery life that Canon has claimed? It seems that I get the claimed battery life with 2 batteries.


<span style="font-size: medium;"]Any thoughts welcome.


<span style="font-size: medium;"]Ben