Sony debuts Alpha A7s with 4k video recording
Sony has just brought 4K video recording capability into its full-frame mirrorless line with the Alpha A7s. The “s” in the name is said to stand for sensitivity, which it backs up by having an ISO range of 50 to 409,600. According to Engadget, the 12.2-megapixel sensor limits downscaling with 3840 x 2160 4K video so you have higher quality footage. It can keep 1080p video internally but it will need an external recorder to take 4k videos. The camera will output this with 4:2:2 color sampling through HDMI.
It is equipped with Wi-Fi and NFC and it can keep XAVC S-format video with a class 10 or higher SDXC card. You can shoot with APS-C cropping in 1080p and has 120 fps support when you capture in 720p.
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