i opted for this camera over the 7 and 5d, being interested in it for video, not stills - but then the res is so good you can just export frames from your timeline. also not having to do a voodoo dance backwards to get it to behave like a video camera is nice.
yes the 5 and 7d's can capture great stuff, fine, but this sony sensor is only a fraction smaller than the 5d and the depth of field capability and performance with the stock lens was amazing, the footage i shot could easily be mistaken for 5 or 7d - because it looks just as good - especially once you've finished the grade of course as with all footage. the dof performance is awesome.
there are some myths regards the frame rates capable, just 25/24 etc - a little google digging will tell you the score on that - or check out the vimeo user group. there is a way to transcode it - i just used the anusoft converter to prores the rushes, no problems at all and great looking footage.
the sound is incredible, the picture superb, great blacks and mids, the highlights blow out easy but this isn't a RED Epic so, hey.
something else i've noticed is that, as i would describe it, the camera seems to be really good at picking up natural light in the mid-ground, the sun and other light reflecting off cars for example, mid-depth in frame.
also on the 5 days shoot i was out in snow, night, bright sun - and using both manual controls and auto the footage was great every time, excellent performance especially at night - i believe there are samples of it used auto and raw on youtube.
i believe the stats on the sensor are that its about 19-20 times bigger than that of an hd camcorder, something like that. you may also be interested in looking up more about it's audio capabilities, as unlike the 7d etc you don't have to run circles round a sacred cow twice and sneeze 5 times just to get it to behave the slightest bit like a video camera.
the only negative (if it's an issue for your planned shots) is of course rolling shutter, slower pans work best but thats something to deal with on many other cameras including the 5 a 7d. i got the camera for use as a run 'n gun mainly, having so far shot just with 100% natural light. i like it a lot.
all the best,
Bluey