@drabo: interesting tests, and surprising. I assume you had video quality set to "high" on the D5300? I think the noise is similar though - the RX10 just has a finer grain structure, which might be because of its full-pixel-readout?

Are you able to post some video comparisons of D5300 internal vs HDMI-external? The stills you posted didn't show a huge difference to me (not worth the cost of a Ninja anyway!).

Thanks for the tests.

http://reviews.cnet.com/digital-cameras/nikon-d5300-body-only/4505-6501_7-35829217.html

Shot with a custom Neutral profile.

D5300 presents D7100-level image quality in a camera body that's somewhere around $400 cheaper. It produces good quality, highly detailed JPEGs and those who are so inclined will find lots of latitude for adjusting Raw files. Like its predecessor, the D5300's Raw files allow shadows to be opened up without introducing too much in the way of noise. Default JPEG rendering is also pleasant, without any over-sharpening halo artifacts.

The D5300's video quality is just as notable as its still image quality. It offers full 1080/60p resolution, available without the crop mode that the D7100 applies to its highest resolution videos.

http://www.dpreview.com/reviews/nikon-d5300

Nikon D5300 sports a newly developed 24.2MP sensor without an AA filter for enhanced sharpness, and Nikon's latest EXPEED 4 processor for better high ISO handling and 1080/60p HD video. The addition of built-in Wi-Fi and GPS (a first for a Nikon DSLR) makes this compact, mid-range DSLR an excellent choice for upgrading beginners and budding enthusiasts alike.

http://www.imaging-resource.com/PRODS/nikon-d5300/nikon-d5300A.HTM

Here is our music video, filmed with Nikon D5300 and D5200 using Nikon Gamma Controls.

Yes I think the absence of FPN justifies the extra cash for D5300. I have both D5200 and D5300 (I upgrade my D5200 for a D5300 just for FPN) FPN isn’t a big problem like moire or aliasing but it’s still annoying. Sometimes I shoot with 2 cameras (D5300, D5200) It’s very easy to match the pictures. These two pictures are the same. But this f.. FPN on the D5200 !

Thanks! I'll go for the D5300 in that case. How long do you reckon is the wait for the price drop?

Nikon D5300 Firmware update v1.01

• AF-P DX NIKKOR 18–55mm f/3.5–5.6G VR and AF-P DX NIKKOR 18–55mm f/3.5–5.6G lenses are now supported. Vibration reduction can be enabled or disabled using the new Optical VR option in the photo SHOOTING MENU, which is displayed when an AF-P DX NIKKOR 18–55mm f/3.5–5.6G VR lens is attached.
• The following issues have been addressed:
  • Choosing negative values for Exposure compensation in the RETOUCH MENU > NEF (RAW) processing display did not have the desired effect.
  • Continued scrolling of the menus for some languages would cause the camera to freeze.

http://downloadcenter.nikonimglib.com/en/download/fw/175.html