Linking to Images

I would like to use Scrivener in order to storyboard a video project that involves a series of educational videos. In order to do so, I thought I would have each image get its own document, and then link to those docs when the image will be used in one of the videos. I am wondering

  1. Does adding an image to the index card create a link, or does it duplicate the image and store it in my project?
  2. If it doesn’t create a link, is there a way to create a link either in the index card or in the main editing screen by which I can see the actual image in Scrivener?

Thanks so much,
SL