## How do you calculate projection distance?

For any given projector, the width of the image (W) relative to the throw distance (D) is know as the throw ratio D/W or distance over width. So for example, the most common projector throw ratio is 2.0. This means that for each foot of image width, the projector needs to be 2 feet away or D/W = 2/1 = 2.0.

### How far away should projector be from screen?

We’re moving a bit closer to the screen. Short throw projectors need to be between 5 and 10 feet away from the screen, depending on how large of an image you want. Short throw projectors have a throw ratio between . 4 and 1.

#### How far away does a projector need to be for a 120 inch screen?

Projection Distance

Screen or image size Projection distance (1) Minimum to Maximum Screw hole number (2)
80 inches (203 cm) 110 to 121 inches (281 to 306 cm) 4
100 inches (254 cm) 138 to 151 inches (351 to 383 cm) 3
120 inches (305 cm) 166 to 181 inches (422 to 461 inches) 2
150 inches (381 cm) 208 to 227 inches (529 to 577 cm) 1

How far away should a projector be from a 100 inch screen?

Projection Distance

Screen or image size (1) Projection distance (2) Wide to Tele
60 inches (152.4 cm) 69 to 113 inches (176 to 286 cm)
80 inches (203.2 cm) 93 to 150 inches (235 to 382 cm)
100 inches (254 cm) 116 to 188 inches (295 to 478 cm)
120 inches (304.8 cm) 139 to 226 inches (354 to 575 cm)

How far should a projector be from a 70 inch screen?

Projection Distance

4:3 Aspect Ratio
Screen or image size Projection distance (1) Wide to Tele Offset from lens center (2)
60 inches 28 to 38 inches (70 to 96 cm) 4.2 inches (11 cm)
70 inches 32 to 44 inches (82 to 112 cm) 4.9 inches (13 cm)
80 inches 37 inches (94 cm)* 5.6 inches (14 cm)

## How far does a projector have to be from a 135 screen?

The old rule of thumb for 1080p is to sit right around 1.5 times your diagonal image size. Which in your case for a 135” screen would be about 16/17 feet back so you’re pretty much right on the money.

### How far should a projector be from a 180 inch screen?

EX5220/VS330

Screen or image size Projection distance Wide to Tele
1 50 inches 59 to 71 inches (150 to 180 cm)
2 80 inches 95 to 114 inches (241 to 290 cm)
3 100 inches 119 to 143 inches (302 to 363 cm)
4 150 inches 179 to 215 inches (454 to 546 cm)

#### How far away does a projector need to be for a 72 inch screen?

Projection Distance

16:10 Aspect Ratio
Screen or image size Projection distance (1) Wide to Tele Offset from lens center (2)
60 inches 24 to 33 inches (61 to 84 cm) 3.7 inches (9 cm)
70 inches 28 to 39 inches (72 to 99 cm) 4.4 inches (11 cm)
80 inches 33 to 45 inches (83 to 113 cm) 5 inches (13 cm)

How far should a projector be from a 90 inch screen?

If your throw ratio is between 0.69 and 0.83 and your screen is 90 inches wide, you will need to place your projector between 62.1- and 74.7-inches from the surface.

How do you calculate projector screen size and distance?

If you know where you’ll be putting your projector, measure the distance between the lens and the wall, then multiply this by the throw ratio. This will tell you the width of the projected image. Use the aspect ratio to get the height, then use the Pythagorean Theorem to find the screen size.

## How far should a projector be from a 84 inch screen?

### How is projection measured?

1. Measure the length from the top-left to the bottom-right corner of your screen. This will give you the diagonal screen size, which is the most common measurement used when buying a screen.

#### How is the throw distance of a projector determined?

A projector’s distance from the lens to the screen surface is called the Throw Distance. The throw distance and the size of the image it produces on the screen are proportional to each other based on the optics of the lens.

How tall does a projector need to be in relation to the screen?

If your throw ratio of 0.85:1 and your screen size is 95 inches, you will need to place your projector will need to be placed 80.75 inches away from the screen. This equates to 6 feet and 8.75 inches once you divide this number by 12 in order to convert this figure to feet.

Where to put a long throw projector in a room?

Long Throw: Providing very large images, this type of throw is usually from projectors that are installed in the center of the ceiling in a large room. Short Throw: Providing large images while reducing shadows and eye glare, this type of throw is usually seen from projectors either installed on the wall or…

## Can a projector be aligned to the center of the screen?

For spaces where the projectors cannot be aligned to the center of the screen, simply select a model equipped with vertical/horizontal keystone correction or lens shift to experience the immersive thrill of a huge screen that’s only available at theaters.