The Optoma Home Cinema UHZ55 projector provides pixel resolution. The throw ratio indicates the width of the image it produces when placed at a specific distance from the screen. For example, with a throw ratio of 1.3:1, the image will be 1 meter wide when the projector is 1.3 meters away from the screen.

The projection technology is the way in which the lamp's light is converted into an image to be projected through the lens. This particular projector uses LCD technology with a laser-type lamp, which has a longer lifespan than LED lamps as well as high brightness and excellent color and black performance.

The image is created by a liquid crystal panel that produces combinations of the three primary colors: red, green, blue, with very good color performance even in black.

Brightness and contrast are two very important characteristics to consider when choosing a projector. This one has a brightness of 3000 ANSI Lumens and a contrast ratio of 2500000:1. Contrast indicates the difference between the darkest and the brightest part of an image and is an indicator of image quality. An image with a low contrast ratio looks faded, while one with a high contrast ratio appears more realistic and with greater "depth."

Brightness indicates how much light the projector can deliver on a specific surface area. The general rule suggests that brighter projectors are preferred in well-lit spaces, while darker ones are preferred in dark spaces.