Projector's autofocus feature ensures that the projected image is as sharp as possible without the user having to manually adjust the projector's focus. 

For Nebula projectors running Android system like Mars II, Mars II Pro or Capsule Max, there are three ways to enable Autofocus:

1. Turn on Autofocus by going to Settings > Projector > Auto Focus Correction > On

2. Slightly Shake the projector to trigger the autofocus mechanism, and adjust the focus manually with the volume+/- button when the autofocus symbol appears on screen to get a clear projected image.

3. Press and hold the menu button on the remote to trigger autofocus, and adjust the focus manually with the volume+/- button when the autofocus symbol appears on screen to get a sharp projected image. 

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