It was all shot 30p as thats the only frame rate the camera will shoot. The high speed stuff was done in Final cut pro... like 700% I did notice the video was jumping and not smooth in most of the shots... but its hard to notice when its small and on the web.

As for challenges, well the biggest is getting proper focus. Outdoors in sunlight it is impossible.. or atleast for me. Trying to focus using the LCD in sun is tough. Also trying to use the fixed lcd for framing is hard if you want low shots or high stuff. Some of the shots i had to almost lay on the ground to see the LCD.

I wont go into much detail as all this stuff has been talked about millions times. I think the biggest let down was the soft focus.... it probably was my fault as i was having a hard time telling if the shots were in focus.

It would be awesome if Canon would release a fireware update what would allow you to shot 1 or 2 second frame rates for timelapse stuff.

I was there three weeks ago, great place for shooting...! In a week I will post a similar staff about Prague....
You got nice footage there ...

Prague is such a wonderful place and you've captured it so well, great stuff.