Sony patented a new expanded dynamic range imaging device (Source: Egami). The following technology allows to simultaneously obtain a high sensitivity and low sensitivity signal from one single pixel! So there is no need to combine different images to create a HDR image. It will create a High Dynamic Range picture form the same Image. To bad it’s a patent only and we might have to wait for years before to see a camera using such a sensor 🙁
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Although you may be referring to a new patent, the technology isn’t new for them. They’ve been patenting various aspects of expanding DR for quite a few years.