Was Nikon's move to Toshiba a mistake?

On 22/02/2013 5:09 p.m., RichA wrote:
Someone on Dpreview remarked that Toshiba lacks a processing step used
in the Sony sensors to remove banding. You can see it in this D7000
image in the sky, but the poster showed it very prominently in the
shadows of a 200 ISO shot from a D5200. This reminds me a bit of the
old Olympus CCD sensors in their original DSLR's. I don't know if the
D7000 has a Toshiba sensor, or a Sony one. It's hard to say when
Nikon began using them.

D7000

http://www.dpreview.com/galleries/re...review-samples

D5200

http://forums.dpreview.com/files/t/0...871a3627054ed9


The D7000 uses a Sony fabricated sensor, IMX071.

The D7000 image is curious as the ISO setting doesn't seem to be in the
exif data. I don't see banding so much as blotchy but random chroma
noise, as if it was taken at high ISO.

The "D5200" sample is worthless, without exif data and information about
post-processing. There's certainly horizontal banding in lifted shadow
areas, but there's no proof this is even from a D5200.
Some base ISO D5200 raw samples might reveal if there's an issue or not.