Hey everyone, I'm new to photography and could really use some tips. I have a Canon Digital Rebel XT and am trying to learn how to use the creative modes. One of the main problems I'm having is trying to focus the foreground and blur the background. It's just not happening, both are blurring. I'm wondering if it's lack of light? The light in our house is flourescent and there's not much natural light. Oh yeah and my subjects are my kiddos who have a hard time holding still. I'm also going to try and catch the Northern Lights this weekend but have never shot in the dark, any advice? Thanks!