What is a projector resolution ? Best video resolution ?

Resolution is the number of dots or pixels used to display an image. Higher resolutions mean that more pixels are used to create the image resulting in a crisper, cleaner image. High resolution is important for projecting detailed charts and graphs, text, and high-definition video. The resolution is indicated by a number combination such as 1920 x 1200. This indicates that there are 1920 dots horizontally across the display by 1200 lines of dots vertically, equaling 2,304,000 total dots that make up the image seen on the screen

Classroom Projector Resolutions:

SVGA (800×600 pixels, 4:3 aspect ratio): SVGA projectors are entry level resolution projectors that are more affordable and suitable for projecting data, charts, and video clips from computers and laptops. SVGA projector offer excellent budget option for classroom training.

XGA (1024×768 pixels, 4:3 aspect ratio): XGA is widely used due to excellent value. Most computers use XGA as their native resolution, so pairing computers to XGA projectors is common. 4:3 ratio offers larger image suitable for classroom applications.

Business Projector Resolutions:

SVGA (800×600 pixels, 4:3 aspect ratio): SVGA projectors are low-resolution projectors that are more affordable and suitable for projecting simple presentations from laptops, they can also be use to project simple data, charts, and video clips.

XGA (1024×768 pixels, 4:3 aspect ratio): XGA is widely used in office meetings. Most computers use XGA as their native resolution, so pairing computers to XGA projectors is common.

WXGA (1280×800 pixels, 16:10 aspect ratio): WXGA is the widescreen version of XGA — delivering the same vertical resolution but providing 20% more horizontal resolution. This has become a common resolution for notebook computers and smartphone.

WUXGA (1920×1200 pixels, 16:10 aspect ratio): WUXGA is becoming the standard for higher-end notebooks and workstation computers. In addition, WUXGA is used for installation projectors and large-venues that require bright, high-definition content.

Home Theater Projector Resolutions:

720p (1280×720 pixels, 16:9 aspect ratio): This format is most commonly used for economical movie projection. It matches the 720p HDTV standard.

1080p (1920×1080 pixels, 16:9 aspect ratio): This is now the standard format for home theater. It matches the 1080i/1080p HDTV broadcast and Blu-ray formats.

4K UHD (3840 × 2160 pixels, 16:9 aspect ratio): This format is the highest resolution available for home theatre applications. It can display images or videos in 4K resolution from compatible devices and are considered top of the line for home theatres.