Sony announces a7S full-frame mirrorless with 4:2:2 4K video output: Digital Photography Review

Sony has announced the Alpha 7S, a 12MP full-frame mirrorless camera designed for both stills and video. The camera can read out its entire sensor fast enough to output 8-bit 4:2:2 4K video over HDMI at up to 30p, without the need for line skipping or pix

www.dpreview.com