Epson PowerLite 800F 5000-Lumen Pixel-Shift Full HD Ultra-Short Throw Laser 3LCD Projector (White) - Manual (Page 115)

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Focusing the Image
Wait at least 30 minutes after you start projecting to adjust the focus.
1. Turn on the projector and display an image.
2. Press the Menu button.
3. Select the Installation menu and press Enter .
4. Select Test Pattern and press Enter .
Note: If Screen Type is set to 16:9 , select the test pattern, then press Enter to display the
pattern you want.