A7s owner that wat to record 4K can use the Atomos Shogun which sells for $2,000 at BHphoto (Click here) and Adorama (Click here). And there is a new firmware update (6.1) you can download at atomos.com/support/.
P.S.: JJ Casas also sent me this: “Thought we’d post up a quick video of our A7S rig and would love to have it featured on your blog among other reads who send in their stuff. http://www.845a.com/blog/2015/1/21/our-sony-a7s-atomos-shogun-film-rig“

4 Responses
Hi, the update that was just posted is 6.1, 6.02 was posted earlier this month. The newest update adds playback.
Sorry! Wrong copy and paste! Thanks for letting me know!
Why you no post the release notes in the article, instead of posting it real quick with spelling errors? Here are the release notes:
Shogun 6.1 release notes
FID:060306100207
Bug fixes:
– Improved speed of SATA drive mounting.
– Recording will start a new clip when exceeding the quicktime sample count limitations – fixes corrupt clips on long recordings
– Changed screen settings to improve calibration results
– Fixed obscure problems in timecode accuracy
Features:
– Playback!
– Scrolling movie picker
– Audio meters added to playback
– Independently record or mute left and right analog channels when recording (Important for 48V)
– Input screen will notify when monitor is not compatible with the video mode
– Option to disable HDMI timecode output for monitors who do not accept this flag
– Tally light now blinks when recording
– Many Gui enhancements
Known bugs:
– A few seconds analog headphone delay is experienced when switching between playback and record.
Thanks for posting the link! And thanks for relaying the news of the new firmware for the Shogun. Will be updating tomorrow 🙂