BenQ GV31 User Manual - Page 36

Fine-tuning the image clarity To sharpen the picture, adjust the focus. • Real-time focus adjustment: You may allow the projector to automatically focus the image in real-time via the settings menu by configuring Focus > Real Time Adjustment to On. When the projector is moved or the projection distance is changed, the function will be performed automatically. The effective distance from the projection lens to the screen is 3.2 meters. See "Focus" on page 49 for more information. • Auto focus: Press the focus button on the remote control and the projector will automatically focus the image. When the focus is completed, press / to leave. • Manual focus: You may also manually focus the image by either pressing the focus button on the remote control and pressing the left or right buttons on the remote control while the focus guide is still on the screen, or by using Focus > Manual Focus in the settings menu. See "Focus" on page 49 for more information. Note Do not look into the lens while the light is on. The strong light from the lens may cause damage to your eyes. Fitting the image to your screen Keystone The keystone effect refers to the situation where the projected image is noticeably wider at the top / bottom / left / right. It occurs when the projector is not perpendicular to the screen. The screen automatically 34