I have a question about megapixels and resolution. Please forgive my ignorance, but is 1080p 1080p when it's on a 16mp camera vs a 24mp camera? I understand that 1080p is only about 2mp. I am trying to decide whether to purchase a d7000 or d5200 as a second body. I have a D810 now. I guess the ultimate point of my question is, will I be able to see a difference because of the lower megapixels of the 7000 on video only? Thanks in advance!
Yes, it is the same 1080p and same 2 megapixels from any camera with any size sensor. The large sensors are resampled smaller for the smaller HDTV requirement.
Two differences remain. The larger sensor likely has larger pixels, therefore less noise, and better high ISO performance. And also, the crop factor of physically larger sensors (meaning mm, not mp, meaning like FX vs DX, or DX vs tiny camcorder sensors) have less depth of field (sometimes considered an advantage, a Hollywood effect of out of focus backgrounds, hard to do with a tiny sensor)...
But yes, the HDTV frame size is 1920x1080 pixels (or 1280x720).
