The K10D is unique in its ability to write RAW images as either Pentax PEF or Adobe DNG files. For us, though, the K10D's biggest "wow" is its in-camera processing capability. It allowed us to take a digital-preview test shot, adjust white balance, and see those changes live, on the LCD screen. We could also "develop" RAW images as new JPEGs and "push" or "pull" their exposure in camera -- or change their size, quality, contrast, sharpness, saturation, and white balance as needed. The Pentax K10D is the only D-SLR available to offer that winning level of sophistication.