exposure setting

Hi All, I have found may great guides on here for my Yi camera but there is one extra thing I would like to be able to do with it. Daytime long exposure shots. I go on quite a few bushwalks and usually video them with my Yi which is cool and all but the people over in EarthPorn on reddit have...

The SJ4000 Wi-Fi has menu settings for ISO and Exposure but what do these really mean? I know that ISO has to do with sensitivity to light - the higher the ISO the greater the sensitivity. But when you change the setting, what's happening inside the camera to make this change come about? The...