does the ixus70 has a built-in timelapse function? thought only the s-series have that. in what way is the 2h a limit? what exactly is limited there, the interval? the number of pictures?
Yes it has. According to the user guide, the recording time is limited to 2 hours, but I never reached that limit. Interval is limited to 1s or 2s, but it can be overwritten with propcase #265.
@pleshti: you can use an intervalometer script if you need to record more than 2 hours. There is probably a way to remove this limit, but it involves assembler and reverse engineering, I'm not sure it is worth the pain.