I'd like to get into model photography as a hobby. I'm looking at getiting either a Canon Rebel XT or a Nikon D50. Not sure which one would do it for me. I've been using the Reble 300D from my office as a company camera, which seems to work great for me being that I have 2 years experience using it. What else would I need on my shopping list in terms of lenses, extra battery, etc.???