Downloaded this from X100 rumors, d700 vs x100 comparison images. http://www.x100rumors.com/?p=104 (not sure how long the megauploads link will last, but it's 350 mb) This is the ISO 6400 images from both cameras. Unfortunately it seems the metering wasn't kept consistent, as the d700 image was definitely brighter, and I think that will give the benefit to the shadow noise. I'm also not sure if these are from raws, or from in camera jpegs (but the raws are in the download). Jpegs are from in camera. In my opinion in the bright area (from the center) the X100 is definitely sharper and losing less detail to noise. In the dark areas (not fully in the corner, but in the lower right of the image) the D700 has more information, but again, it could be a combo of the darker exposure and/or in-camera noise reduction. D700 had noise reduction set to off, and the X100 set to low (it can't be turned off) I think the x100 is slightly behind in the dark part to a lesser extent than the d700 is to the X100 in the lighter part. But it's minor griping, they both look really nice. I would give the edge to the d700, but it's pretty amazing that the X100 is holding up to a full frame sensor at ISO 6400.