The RED patent is for compressed raw video. Uncompressed raw video (like Sigma FP) is unencumbered by the patent, but the file sizes are huge. RED were pioneer

The RED patent is for compressed raw video. Uncompressed raw video (like Sigma FP) is unencumbered by the patent, but the file sizes are huge. RED were pioneers in the early days of digital cinematography but now they are slowing things down. Can't really understand how they got a patent for something so simple. Even Apple lost the patent lawsuit to use compressed raw video in Prores RAW without paying royalties RED. I'm hoping Blackmagic RAW would take off beyond Blackmagic cameras, but so far only Atomos has picked it up. (BM and Atomos both use FPGAs in the ISP so maybe that's what you need to process it realtime)