Скачать или смотреть Does DX Crop sensor factor effect on aperture value for exposure

I did this quick video because of a few discussions I've seen and had with people on different photography forums on Facebook.

Im using a DX D5100 and a FX D800 camera body

The 5100 is mounted to a Nikkor 70-200mm f2.8 VR2 lens
set at 200mm, ISO 100, Dynamic Exposure metering at f4 in Aperture priority

The D800 is mounted to a Nikkor 200-400mm f4 VR1lens
set at 350mm, ISO 100, Dynamic Exposure metering at f4 in
Aperture Priority

Both Cameras are reading the exact same exposure in Aperture Priority. The reason I used Aperture was to allow the cameras to set their own exposure values with me tweaking anything at all.
And both camera exposure compensation's were set to ZERO

Both cameras are focused on a sign at the edge of the woods across the field from my house.