Yes, 256gb appears in-camera if I format from computer...well, actually 238GB or something. Whatever the card actually holds.
I did a few more quick tests:
- approx 146GB seems to be a stopping point for continuous 24p recording. Not sure why. Slow spot on the card? I have emailed Komputerbay for tech support on this.
- Recording at 48p (FPS Override), I'm getting about 6 seconds at 1920x672, 8 seconds at 1856x650, 1:30 to 2:00 at 1728x606, and continuous recording at 1600x560. Global draw off.