Mars 3's image size is determined by the distance between the projector and the screen, as indicated here:

Projection Size: 30-200"

30" / 0.8 m

50" / 1.3 m

80" / 2.1 m

100" / 2.6 m

120" / 3.2 m

150" / 4.0 m

200" / 5.3 m

Moving the projector closer to the screen will make the image smaller and moving the projector farther from the screen makes the image bigger. When the projector is placed at a proper distance, you can get a suitable image size for a great viewing experience.

You can also zoom out and make your image 50% smaller with Mars 3. Go to Settings > Projector Settings > Image Correction > Zoom.

If you want to project a larger image, please move your Nebula farther away from the screen.

If you have additional questions, please contact us for further assistance.