I'm a newbie with this photography stuff, and have been learning a lot pretty quickly, but I've never had the chance to take pictures of other people; just scenery and objects for the most part. My friend wants me to take some photos of him for a cover. I wanted to do a portrait with the sun setting in the background. I know that probably goes against the grain, but it'll be cool. I have a kit lens and 50mm f/1.8 G lens. What lens and what settings would be the best for this type of shot?