Projection Distance (2024)

The distance at which you place the projector from the screendetermines the approximate size of the image. The image sizeincreases the farther the projector is from the screen, but canvary depending on the zoom factor, aspect ratio, and othersettings.

Use the tables here to determine approximately how far to placethe projector from the screen based on the size of the projectedimage. (Conversion figures may have been rounded up or down.)

Vertical lens shift adjustment


Projection Distance (1)

Horizontal lens shift adjustment


Projection Distance (2)

16:9 Aspect Ratio Image or Screen

Screen or image size (1)Projection distance (2)

Wide to Tele

40 inches (101.6 cm)46 to 75 inches

(116 to 190 cm)

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)

150 inches (381 cm)174 to 283 inches

(443 to 719 cm)

200 inches (508 cm)233 to 378 inches

(591 to 959 cm)

Screen or image size (1)Offset from lens center (3)Offset from lens center (4)Offset from lens center (5)
40 inches (101.6 cm)2 inches (5 cm)21.6 inches (55 cm)8.4 inches (21 cm)
60 inches (152.4 cm)2.9 inches (7 cm)32.4 inches (82 cm)12.6 inches (32 cm)
80 inches (203.2 cm)3.9 inches (10 cm)43.1 inches (110 cm)16.7 inches (43 cm)
100 inches (254 cm)4.9 inches (12 cm)53.9 inches (137 cm)20.9 inches (53 cm)
120 inches (304.8 cm)5.9 inches (15 cm)64.7 inches (164 cm)25.1 inches (64 cm)
150 inches (381 cm)7.4 inches (19 cm)80.9 inches (205 cm)31.4 inches (80 cm)
200 inches (508 cm)9.8 inches (25 cm)107.9 inches (274 cm)41.8 inches (106 cm)

4:3 Aspect Ratio Image or Screen

Screen or image size (1)Projection distance (2)

Wide to Tele

40 inches (101.6 cm)56 to 92 inches

(143 to 233 cm)

60 inches (152.4 cm)85 to 138 inches

(216 to 351 cm)

80 inches (203.2 cm)114 to 184 inches

(288 to 468 cm)

100 inches (254 cm)142 to 231 inches

(361 to 586 cm)

120 inches (304.8 cm)171 to 277 inches

(434 to 704 cm)

150 inches (381 cm)214 to 347 inches

(543 to 717 cm)

200 inches (508 cm)285 to 463 inches

(724 to 1175 cm)

Screen or image sizeOffset from lens center (2)Offset from lens center (3)Offset from lens center (4)
40 inches (101.6 cm)2.4 inches (6 cm)26.4 inches (67 cm)10.2 inches (26 cm)
60 inches (152.4 cm)3.6 inches (9 cm)39.6 inches (101 cm)15.4 inches (39 cm)
80 inches (203.2 cm)4.8 inches (12 cm)52.8 inches (134 cm)20.5 inches (52 cm)
100 inches (254 cm)6 inches (15 cm)66 inches (168 cm)25.6 inches (65 cm)
120 inches (304.8 cm)7.2 inches (18 cm)79.2 inches (201 cm)30.7 inches (78 cm)
150 inches (381 cm)9 inches (23 cm)99 inches (251 cm)38.4 inches (98 cm)
200 inches (508 cm)12 inches (30 cm)132 inches (335 cm)51.2 inches (130 cm)
Projection Distance (2024)

FAQs

Projection Distance? ›

The distance at which you place the projector from the screen determines the approximate size of the image. The image size increases the farther the projector is from the screen, but can vary depending on the zoom factor, aspect ratio, and other settings.

How do you calculate projection distance? ›

A projector's throw ratio is defined as the distance (D), measured from lens to screen, that a projector is placed from the screen, divided by the width (W) of the image that it will project (D/W). So the throw ratio formula is throw ratio = distance / width. The ratio, like any ratio, is dimensionless.

What is the projected distance? ›

Projected distance is a value calculated by projecting the vector between a given point and the centroid of its neighborhood at a given scale on the normal as given in Equation (3). The procedure is shown in Figure ...

What is the best projection distance? ›

Recommended Distance Range: Approximately 10 to 15 feet. Placing the projector within this range ensures that you can enjoy a large and immersive 100-inch image while maintaining good image quality and brightness.

How do you calculate projection range? ›

Ttof=2(v0sinθ)g. T t o f = 2 ( v 0 sin θ ) g . This equation is valid only when the projectile lands at the same elevation from which it was launched. The maximum horizontal distance traveled by a projectile is called the range.

How far back should you sit from a 120 inch screen? ›

13.4 ft

How far should you sit from a 100-inch screen? ›

To find your optimum distance, measure the size of your screen diagonally and divide that size by . 84. Using that calculation, a 100-inch projector screen requires an optimal viewing distance of 119 inches or 3m from the screen.

What is the formula for map projection? ›

The globe is naturally parameterized in terms of two variables, latitude ϕ and longitude θ. Thus, we could think of a map projection as a function T : R2 → R2 or T(ϕ, θ)=(x(ϕ, θ),y(ϕ, θ)).

How do they calculate distance? ›

distance = speed × time.

What is minimum projection distance? ›

For example, the specification 100-inch @ 8ft means that the minimum distance required between the projector and the screen is 8ft to project a 100-inch screen.

What is the standard size of projection? ›

Projector screen size and distance

The most popular screen sizes fall within 100 – 120 inches (2.5m-3m) diagonal, but this largely depends on the size of your room. This is around 2.2m-2.65m wide (based on a widescreen 16:9 projector) and makes going for a projector over a professional display worthwhile.

What is the most common map projection? ›

One of the most famous map projections is the Mercator, created by a Flemish cartographer and geographer, Geradus Mercator in 1569. It became the standard map projection for nautical purposes because of its ability to represent lines of constant true direction.

Which projection is most widely used? ›

In a Mercator projection, landmasses such as Greenland and Antarctica appear far larger than they actually are relative to landmasses near the equator. Despite these drawbacks, the Mercator projection is well-suited to marine navigation and internet web maps and continues to be widely used today.

Why is 45 degrees the maximum range? ›

At angles greater than 45 degrees, the vertical component of the object's velocity becomes more significant, causing it to spend more time in the air. However, the drag force acting opposite to the direction of motion slows the object down more rapidly, reducing its overall range.

What is the formula for the projection formula? ›

The formula for a vector projection of w onto v is given by p r o j v w = v ⋅ w | v | × v | v | , where the first fraction is the scalar projection (the magnitude of the component of a vector in a certain direction) of w onto v, and the second fraction is the unit vector of v (i.e., a vector of length 1 in the ...

What is the formula for the projection equation? ›

The projection vector formula is Projection of Vector →a on Vector →b=→a. →b|→b| Projection of Vector a → on Vector b → = a → . b → | b → | . The projection vector formula representing the projection of vector a on vector b is equal to the dot product of the two vectors, divided by the magnitude of the vector b.

What are projection formulas? ›

A projection formula which indicates the spatial arrangement of bonds is called a stereochemical formula or stereoformula. Examples of stereoformulae are Fischer projection, Newman projection, sawhorse projection, wedge projection and zig-zag projection.

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