Nikon ups the ante for image quality in the sub-$1,000 price class.
Lori Grunin
I've been reviewing hardware and software, devising testing methodology and handed out buying advice for what seems like forever; I'm currently absorbed by computers and gaming hardware, but previously spent many years concentrating on cameras. I've also volunteered with a cat rescue for over 15 years doing adoptions, designing marketing materials, managing volunteers and, of course, photographing cats.
Because the sensor lacks an antialiasing filter, the images retain excellent sharpness even as noise rises. JPEGs look very clean up through ISO 800, and they're still quite good at ISO 1600. (Note: test shots at +0.7 EV.)
While ISO 3200 shows quite a bit of detail degradation, it's still quite good in well-lit areas, and many of my ISO 6400 shots were quite usable. (Note: test shots at +0.7 EV.)