Two disadvantages of using digital light projectors (DLP) when compared to LCD projectors are the rainbow effect and limited pixel shifting.
DLP projectors use a color wheel to display colors sequentially. Some viewers may perceive a rainbow effect, characterized by flashes of color, particularly when shifting their gaze rapidly between different parts of the screen. This phenomenon can cause visual discomfort and distraction for certain individuals.
DLP projectors typically use a fixed number of micro mirrors to project images, and they may not be able to achieve true 4K resolution without pixel shifting techniques. This can result in reduced image clarity and sharpness compared to LCD projectors that utilize native 4K panels. In situations where precise and high-resolution visuals are critical, DLP projectors may not match the image quality offered by advanced LCD projectors.