16.2 effective megapixel, full-frame sensor (16.6MP total)
10fps shooting with AF and AE, 11fps with focus and exposure locked, 24fps 2.5MP grabs
91,000 pixel sensor for metering, white balance, flash exposure, face detection and active d-lighting
ISO Range 100-12,800 (extendable from 50 – 204,800)
MultiCAM 3500FX Autofocus sensor works in lower light and with smaller apertures
Two sub-selector joystick/buttons for shooting orientation
1080p30 HD video at up to 24Mbps with uncompressed video output
New EN-EL18 battery (21.6Wh capacity, CIPA-rated at 2600 shots)
Twin card slots - one Compact Flash and one XQD
7 minute Video:
This is likely to be the last 'true' DSLR I ever buy. I have taken my D300 around the world and put over 100k clicks on it, I will keep it and continue to use it as my backup along with my lightweight EVIL cams. But I have been dying for a REAL full frame camera to bring back full size eyepieces and the low light capability that are inherent to the form factor (along with the weight).
This is going to be the biggest gear purchase I have ever made, it will cost me more than anything I've ever bought except for cars and houses. I've been saving since the day the D700 was announced, knowing that eventually I wanted a FF cam, regardless of form factor. I'm a bit nervous about it (and I WILL get it insured against theft or loss!) but I am also so stoked to play.
Engadget quick look:
Unofficial 12k image: