1Ds Mark IV Specs [CR1]

[x-vision]

So, a FF back-lit CMOS sensor ? ? ?

ROFL  .

This so called "source" has no clue about what's going on in the semiconductor industry today.

[Idahophoto]

Somebody is dreaming

[Aputure]

"Doubles the sensitivity of the sensor"

Does that mean they will be going from 3200 tops to 12800 tops? Or does it mean 2 stops improvement in noise performance? What exactly, I wonder...?

[Lawliet]

That would mean going from 3200 to 6400, if you take it literally. AKA a single stop noise performance.

But there is always the possibility of Canon making simply a certain range of settings available, and the true change is in image quality.
Say the sensor creates 1/3rd of the noise. this could translate to one stop higher settable sensitivity with improved noise and shadow rendition, or an additional H-setting with worse characteristics.

But being backlit wouldn't help a large sensor as much as it does for a small one, I wouldn't expect wonders without taking hints from the 1DIV's design.