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I'm just getting started with Lightroom 4. I've been shooting RAW + JPG using my Nikon D7000, but would like to just shoot RAW and then convert to JPG in Lightroom. What's the most efficient way to convert a group of files to JPG and end up with approximately the same look and quality that I get out of the in-camera conversion? Does Lightroom apply any processing if I just import all the files and then directly export them to JPGs without changing anything?