Lü 1st generation - Change the image ratio
If any part of the screen does not display correctly in the projection, the aspect ratio may have been accidentally changed.
To change the
image ratio and thus have a full screen, press the Aspect button using the
projector remote control and choose Auto mode.
The camera will need to be calibrated if you have changed the projection ratio.
Follow this link to get some help with the camera calibration : How to calibrate the camera
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