Which factors are common across all projector displays?

Brightness, lamp life, lens type, and connectivity are fundamental factors that impact the performance of projector displays and are relevant across various types of projectors.

Brightness is critical because it determines how well an image can be seen in different lighting conditions; a projector with higher brightness can produce clearer images in well-lit environments. Lamp life refers to the duration a projector lamp can function before needing replacement, which is an important consideration for maintenance and operational costs. Lens type affects the projector's ability to focus and the distance from which it can project an image, which is crucial for achieving the desired screen size and image clarity. Finally, connectivity options are essential for compatibility with different input sources, allowing users to easily connect devices like laptops, Blu-ray players, or streaming devices.

While screen size and lamp type are significant for specific contexts, they are not universally applicable to all projectors. Resolution and color accuracy play an important role, but they vary greatly between projectors and are not consistent across all models. Weight and energy consumption are important for considerations like portability and cost-efficiency, but they do not impact the display quality as directly as the factors mentioned in the correct choice.