I expected more buzz when this came out. Anyone here using it for video? I'm particularly interested in finding out what the HDMI video out quality is. Thanks.

The D7100 is a great camera for video recoding, it has some noise but the dynamic range is at least 12 stops or more, colour rendition is very good and there is no aliasing or moire. If used with an external recorder the noise problem is greatly reduced. The HDMI output is clean, I use the D7100 with a Pix 220 and I am very pleased with the results.

here is a link to a short clip filmed last June as part of documentary I am making in France PIX220 Nikon D7100 on Vimeo

Yes, actually I've been using a D7100 for about 2 months now. Very happy with the results. Its a little smaller than the D800. The video is very clean especially if you use a Neutral profile setting. I've tried some other flat profiles but they added noise.

Overall I've shot broadcast work with the D7100, every liked the footage and thought it was acceptable. Its very comparable to my Nikon D800 footage. The only caveat is aperture control in liveview mode doesn't work on the dial. I mostly use variable ND's for subtle exposure changes. Pair it with a Nikon 17-55mm 2.8 and its nice little setup.

Here's a few samples I've shot using Nikon DLSR for Broadcast. This was mostly shot on a D800 but I am using a D7100 with similar results.

Gotham Comedy Remix - Tom Green on Vimeo

Looks great. So the 800 is the only model that allows you to adjust the F stop in live view mode? the 610 does not. and it appears that the 7100 doesn't either.

the HDMI out is clean, however, if recording to internal cards it bumps down when recording? So to get the highest results use external device like the Atomos or Pix220 and don't record internally?

thanks for sharing the links

For internal recording, the Nikon D-movie cameras (D800, D600, D7100 and D610) compress video to make H.264/MPEG-4 files with a maximum bitrate of 24mbs (4:2:0 color space). The files look very good, but they are definitely more compressed than comparable Canon 5D MkIII files. If you want a different codec, less compression, or 4:2:2 color you'll need to record via HDMI output to an external device.