Zoom out slightly in Presentation

Is there any way to save a zoomed out slide.  In my Prezi it is zooming in too close to the slide and you can’t see theback ground… how can I alter that or save the distance I want?

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I assume, you already found out, that you can -when preparing the presentation path - zoom a little out and add that view into your path. There is no need to only show full sized pics! . 
However, if you wanted a transparency setting on the pics (to see the background behind) I didn’t find one,yet.
uli