Moverio content too small

Hey,

I am using a Moverio BT-350 for a school project. I try to make an AR experience for a museum. In Unity with Vuforia I am using an AR camera with an imageTarget to track. However the content is too small, the idea is you get additional information around the painting. The Moverio uses the camera and plays the content around the painting, however it uses the size of the menu and therefore showing the painting and the visual content not in its real size. I already fixed the problem of showing the camera feed. 

Any options/settings to fix this?