Nikon D800 vs Phase One IQ160 Medium Format RAW quality
"With 36 Megapixels, the Nikon D800 comes closer to medium format territory than any DSLR before it, and at a much more affordable price too. Which of course begs the question how the D800 actually compares to a medium format camera in practice. On this page you'll see how 36 Megapixels measure-up to 60, but please bear in mind this was a casual extra test performed out of curiousity when the opportunity arose. In particular I didn't have access to the right prime lenses for a truly fair comparison, so please take the results for what they are: a fun side-by-side view giving a rough idea of where the leading technologies in each format are currently at."