I have the panasonic pvgs250. Supposedly it has optical image stabilizer and electronic image stabilizer. I have no clue what the difference is but it says EIS in the top right of the viewfinder. Some of the shots are really shaky even when we are doing a decent job filming. Is there any way to make it so it isn't as shaky when i'm going down the mountain follow camming or anything? Do len's do this for you?