I really like photography and I'm thinking about getting into it. I have an SLR but I don't even know how to put film in it. I'm thinking about getting a D-SLR this summer, but people say that it's better to start with an SLR? I'm already handy with a regular digital camera and I can take decent pictures with one but now that I'm trying to get better compositions, I know I need to move up with my camera. What do more experienced people think? Is it really necessary to start with an SLR?