#2. "RE: noise characteristics at 800 iso for the D7100" In response to In response to 0
El Sobrante, US
Unless you pixel peep at 100% or print huge, I don't think you will see any noise at ISO 800. I am comfortable with the noise on my D7100 up to 3200, and 6400 is OK in a pinch. At 3200 and 6400, you will probably want to use some noise reduction in pp, but you can get perfectly usable images that way. In head to head comparisons to a friend's D600, I would say his D600 was about 1 and 1/2 stops better for noise. I would strongly advise shooting RAW, for the reasons widely stated in various posts here on Nikonians. If you use Capture NX2, you can batch process your RAW files and generate jpgs that will be identical to what you would have gotten in-camera, including any noise reduction you have set up.