To shoot RAW with your Sony PXW-FS5 you need the CBKZ-FS5RIF (Sony FS RAW Output Upgrade License for PXW-FS5), the FS5 need to be on at least formware 2.0 – when writing this (feb2018) the latest firmware was FW4.02 – you can find the latest firmware here.

You also need a compatible recorder. A Convergent Design Odyssey or a Atomos Shogun series. When shooting/recording from the RAW output of the Sony PWX-FS5 you have the following options:

FS5 + Atomos Shogun Inferno or Shogun Flame you get:

  • CinemaDNG RAW: 
    • 4K DCI/ 4K UHD at 24/25/30p
    • 2K/1080p up to 120p
  • RAW to ProRes/DNxHR:
    • 4K DCI / 4K UHD up to 60p (30p in the Flame)
    • 2K/1080p up to 240p

FS5 and the Convergent Design Odyssey 7Q+ you get CinemaDNG RAW or ProRes:

  • DCI 4K (4,096 x 2,160) up to 60p 
  • DCI 4K bursts up to 120p // 4 second burst mode
  • 2K (2,048 x 1,080) up to 240p

Alistair Chapman who you prob. know already has some great RAW tips in this tutorial video and there is also a good article here: FS5 RAW Shooting Tips

Doug Jensens RAW vs. 1080P comparison:

Sony FS5 FS Raw Low Light Testing, Post Workflow and Options with Anthony Brown