Find the video or photo clip that you want to add the dramatic zoom to and put it into your Timeline. Once it is here you can just right click it and select Video Effects from the pop up right click menu. Here you are going to then find Ease In from the left hand video effects column, which is right above Ease Out and right below Brightness, Increase. Select Ease In and hit the Add button in the center more than once. Each additional Ease In effect that is added to the right hand column will multiply the degree of zoom one more time. You can add up to six degrees of Ease In, which is the maximum amount of video effects that are allowed on the single clip. Once you have the number you want just hit OK at the bottom of the Video Effects window and it will be applied to the clip.