There's been a backlash against digitally manipulated photos in the media, and frequently for good reasons: heavily edited shots set unrealistic expectations at best, and are outright misleading at worst. And National Geographic is no exception to this truth-in-pictures trend, apparently. The magazine has published a piece both promising "honest" shots and explaining how it screens for Photoshop trickery. It insists that photographers (both pros and Your Shot amateurs) hand over RAW files when possible, and will question anyone who doesn't have those files on hand. This isn't just a theoretical exercise, either -- Nat Geo says there have been times when it rejected images.