I am a newbie when it comes to digital cameras so bare with me. I got a digital camera a couple months ago. I have been using heavy duty batteries and it seems like I am changing them after about 20 pictures. Is this normal or is it a problem with the camera? I have been trying to save money and I feel like I am being robbed here. I am wondering if I should try alakline batteries even though I will end up spending a little more. Any help or suggestions?