AVIXA AV Math Practice Test

To determine the image height when considering the Farthest Viewer distance of 240 inches with ADM (Acceptable Display Magnification) for a 1080p image, it is essential to understand the relationship between viewing distance and image height.

1080p resolution refers to a display resolution of 1920 x 1080 pixels. The ADM dictates a comfortable viewing experience where the viewer can appreciate the resolution without visible pixelation or strain. For 1080p, a common guideline for calculating the optimal image height can involve using typical ratios which suggest that the viewing distance divided by a certain factor determines the recommended height.

When applying a standard ratio, it's common to suggest that the viewing distance can be divided by a factor to determine the ideal image height for optimal viewing. A reasonable factor for a comfortable viewing experience at 1080p is around 8 to 10 times the height of the screen.

If you take 240 inches as the viewing distance, dividing by 8 (a commonly used factor for comfortable viewing of 1080p) gives you 30 inches as the recommended image height. This allows for sufficient detail to be viewed without any artifacts or pixelation becoming visible.

Hence, the conclusion that the image height must be