The buzzword "4K" was a major theme through the recent NAB 2011 show in Las Vegas, particularly at the DCS 2011. In terms of 4K image capture, the issue was a hot topic partly because of Sony's debut of its new F65 CineAlta Digital Motion Picture Camera. Sony is promoting the camera as a true 4K (4096  x  2160) digital imaging system for high-end movie production built around an 8K 20-megapixel CMOS chip with new architecture that permits almost half of those 20 megapixels to be dedicated to green channel photosites for each pixel, allowing the capture of wider color space, since the green channel is the foundation of the luminance signal on digital sensors. Along with F65 comes a corresponding workflow methodology that outputs 16-bit linear RAW data and is built specifically to accommodate the Academy Image Interchange Framework-Color Encoding Specification (IIF-ACES).
 
By Michael Goldman
 
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