It’s the same when it comes to home cinema, maybe even more so because you’re working with even less room and tighter physical constraints compared to a commercial venue. When a projector is being used to play movies at an outdoor cinema or drive-in theater you want it to be positioned correctly as soon as possible. Furthermore, being too close or too far can result in image issues such as the projection being: If you go too far the projection blows up to the point of being too large to be contained on the screen. If you go too close the projection shrinks. The projector lens is calibrated in order to push the projection out at a certain distance. High beams on cars can reach far but not too far.Īt least in terms of projectors in-home or outdoor cinemas, this is also the deal. However, light on earth has a more limited reach, particularly if they’re lights from electronics like projectors or battery-powered devices like flashlights. Stars many times bigger than the sun are able to travel to mind-boggling distances and showcase themselves at nighttime. However, light doesn’t always travel as far as you’d want it to travel.
Light speed is the fastest thing in the known universe. Most projectors have a long throw lens though. A short-throw lens or a short-throw projector can correct throw distance of a home theater projector in case your home cinema or den is too small. Zoom helps calibrate the size of the projection and throw ratio helps you know how far you should place the projector relative to the screen. In regards to Zoom & Throw Ratio, it showcases how far or close your image can get.
Projection affects the size of the image, such that the further away the projector is the bigger the projection ends up being if it’s a long-throw kind of projector. It’s the distance of the image that’s “thrown” into the screen, hence the choice of words. According to film terminology, “throw” is the distance between the screen and the projector, whether it’s a home cinema video projector or a movie projector.
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