Alister Chapman has written about his experiences shooting 4K RAW on the Sony F5 + AXS-R5 recorder, and then having to edit and grade it on his x laptop:
I decided to go to one of the local landmarks the day before the event, shoot it in 4K, edit that footage and then grade it in order to produce a short 4K film. The object being to prove that Sony’s 4K raw is not something to be afraid of. It’s actually quite manageable to work with, even with just a laptop.
I shot in 4K raw, I love the post production flexibility that the raw footage brings. In order to keep image noise to a minimum and also to keep exposure easy I used a MLUT (Lut 2) and 640 EI ISO.
Watch the video here:
Once back at the hotel the first stage was to transfer everything from the AXS card to a hard drive. For my travel shoots I use Seagate 2TB USB 3 drives. These are 3.5? drives so require mains power, 2.5? drives are not really fast enough for 4K raw editing.
I could have used the XDCAM HD files from the camera as proxies for the edit, but I find it just as easy to use the raw files. My laptop is an off-the-shelf 15? Retina MacBook Pro with 8GB of ram. I use Adobe Premiere CC with Sony’s raw plugin for the edit. One thing I have found necessary is to re-boot the computer before editing the raw files. I find Premiere more stable if I do this.
It really is possible to edit and grade Sony’s 4K raw on a laptop. It’s not particularly painful to do. I wouldn’t want to do a long or complex project this way, but for short simple projects it’s really not a big deal. If you get a BlackMagic thunderbolt MiniMonitor box you can use any HDMI equipped TV as an external monitor. Sony’s 4K raw is easy to work with, the biggest headache is simply the size of the files. At 500GB per hour at 24/25fps there’s a lot of data to manage, but this is no more than uncompressed RGB HD. In the office I have a workstation with a pair of NVIDIA GTX570 graphics cards, these graphics cards give me enough video processing power to work with 4K raw at full resolution in real time.
Read the entire article and detailed workflow here.