“Compared with the COOLPIX A, at the lower ISO settings, the X100S looks a little sharper, but in noise terms there’s little to choose between them with the COOLPIX A’s 100 ISO crop a close match for the X100S’s 200 ISO. At 400 ISO it’s still a pretty close call, but at 800 ISO it looks to me like there’s noticeably more noise in the COOLPIX A crop. At 1600 ISO there’s clearly more texture in the wall, the text panel looks softer and the edge detail is beginning to crumble on the COOLPIX A crop where the X100S is still holding strong.
But read more and see all the ISO-comparison shots here at cameralabs.
No need to tell you which images comes from the X100S X-Trans sensor ;)