« on: September 21, 2014, 12:03:39 AM »
I posted here amongst other places on the week the C100 shipped that there was no point to owning the C100 without the Ninja external recorder. That combo gave you the same direct-to-ProRes workflow of the Alexa along with the same 1080p24 image the C300 or C500 would give you via external recorder (OK plus and minus some minor color science tweaks), for only $7000 then and $5000 today.
The GH4 and FS7 do 4K internally but it's so ignorant to restrict yourself to comparing internal recording only. External recorders are standard throughout professional production, often with many formats being recorded simultaneously for various purposes.
The GH4 has something like 1100 lph resolution internally while the FS7 has an incredibly impressive 1700 lph internal. The FS7 is just about the first cam I'm aware of that really has a workable 4K internal workflow (RED certainly doesn't). It's a formidable entry and does easily outperform the C100/C300 at native ISO, with over a stop better DR and over three times more distinguishable pixels, all into a compressed format on commodity media. The FS7 completely eclipses the CX00 series from what we know now (incl ergonomics), but I have yet to see IR and low-light tests (the Canons are awesome there). SLog3/SGamut3Cine is very workable color though you may prefer Canon Log as a starting point, a matter of taste. The FS7 examples so far haven't had competitively good grading (look at the new Panasonic Varicam demo video for truly pro grading).
Canon has its work cut out for it catching Sony, I think they can do it, but right now Sony is very much in the lead.