I'm pretty sure you can shoot pretty much continuous at resolutions higher than that.
you cant shoot in high resolution but you can shoot much better than this with the right lens. it was just a trial.
one importing thing i wanted to share with you guys- i shoot in raw 1152 X 460 and upscale to 1080p and compare with h264 recorded in 1080p. O my god raw is much sharper. its unbelievable. thats the 2nd reason why i love to shoot in raw rather than shooting h264 1080p and the 1st reason why i like raw is you have a lot of controls in post prodution.