Saturday, February 27, 2010

A couple of things I never knew about the Red One

The Red Corporation's Red One camera – the most widespread of high-def pro cameras – employs a Super-35mm CMOS chip which, through a structure employing amplification and a dedicated transistor for draining charge on every pixel, givies none of the smear and bloom or the noise of CCD cameras. At a notional 4.5K (4480x1920) resolution, this should be capable of the kind of accurate account of the optical scene that 35mm film has. But the RAW format data in CMOS is digitised in situ, rather than converted from charge to voltage at the chip and only subsequently converted to digital data as in CCD architectures. The result is that the latent image is inaccessible: the chip itself reduces the data by a factor of ten before it is even buffered in the cameras's hard drive.