It is commonly believed that having at least a 100-inch screen can really immerse into an ideal home cinema experience. Though a large space is needed in order to project onto large screens, today’s short throw and ultra-short throw projectors, or throw ratio around 1.13:1, make it easy to enjoy 100”+ screen sizes in rooms of any size simply, especially in small apartments.
Take throw ratio 1.13:1 as an example, the relationship between projection distance and screen size is defined as
Throw Ratio = Throw Distance / Image Width,
which can calculate a distance as 8.2ft from the wall for projection of a 100-inch image with a 16:9 aspect ratio (image width is approximately 7.2ft).
Look for information about screen size and distance, typically expressed as "screen size @ distance" from the screen.
In this example, the specification "100"@ 8.2ft " means that the minimum distance you will need is 8.2ft from the projector to the wall to get a 100-inch screen size, which is an ideal projector set up in a space of about 21 sq. ft to 32 sq. ft, such as a small apartment when it is needed to project a 100-inch picture.
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