Greetings from Paris! This is probably the stupidest question in this forum, but I am a real beginner who really knows nothing. I have a bridge Olympus SP-510UZ and I would like to know what is the MaH of the battery should I use 2600, 2950 or even more? A capacity that will allow me to easily walk around and taking pictures without worries. Finally, is it necessary to use the battery of the same brand to avoid destroying the camera? Thanks in advance for all feedbacks.