gtoshima

hi all, i just got the mark iii and been doing a little testing. i read that, typically, one can shoot about 45 mins on a 32 gb card, at 1080/24fps all-i. but, i've been able to put almost 2 hours (1 hour 45 mins) on a 32 gb card....which makes me suspicious. am i doing something wrong in settings? thanks for any ideas. goro