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Front Projection Vs. Rear Projection: Which Is For You?


Front and rear projections are common styles of projection. But you cannot determine which is better if you do not know how each of them works or the features that make them different.

This article discusses the difference between these projection styles, their pros and cons, as well as their use cases.

Front projection

front projection

This is the most common type of projection. The projector is placed on a table, on the floor, or mounted on the ceiling. It is positioned in front of the screen, which may be portable or permanently installed on the wall.

In front projection, the light from the projector hits the screen, but is reflected back to the viewer. This type of projection is cheaper because it requires no special screen.

However, it causes shadowing when projecting, especially during presentations where the presenter has to stay in front of the projector, and constantly move across the screen. Also, anyone walking in front of the projector can disrupt the viewing.

The projection area is usually clustered, since all the devices are in front of the screen. If wired projectors are used, the cables are usually visible.

Rear projection

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Unlike in front projection, rear projection works by positioning the projector behind the screen; other devices like the speakers are also kept behind the screen.

The rear projection screen is mounted at a certain distance from the projector, depending on the throw of the projector. A long-throw projector will require much space between the projector and the projection screen, while a short-throw projector will require a lesser distance.

The projector casts lights on the screen. The screen diffuses the light through itself and directs it towards the viewer at the opposite side. Most times some amount of light is also reflected back to the projector and is lost in the process.

Rear projection gives a bright, clear and sharp image, it prevents shadowing when projecting, and it also minimizes the noise from the projector. This makes it suitable for places like museums, theaters, and churches.

However, rear projection requires a special projection screen, which is usually expensive.

Front projector vs. Rear projector

Ambient light

a woman watching 4k projector with high resolution image

In front projection, ambient light affects the image quality. To get a bright image, the ambient light needs to be reduced.

It is the opposite in rear projection; there is a better contrast and image quality when the ambient light is high. To achieve the best image, make sure that the light hitting the back of the projection screen is controlled or contained mainly behind the screen.

Viewing angle

For front projection, as the viewer moves further off to the side the image becomes more distorted, and the higher the screen gain, the narrower the optimal viewing angle becomes.

In rear projection, the viewing angle depends on the screen material. That is, it depends on how well the material can diffuse light through itself.

Space

front projection with wide space

Since in rear projection, the projector and other devices are kept behind the screen, there is usually little space available in front of the screen.

But in front projection, the projector as well as the other devices is positioned in front of the screen, so there is enough space available, especially when the projector is mounted to the ceiling, or the screen is fixed on the wall, and the speakers or soundbar are placed high on a shelf.

Brightness

Both projection styles give the same brightness level when done in the right environment, and with the right screen.

However, light interference and the projector’s distance from the screen, can cause a decrease in the image brightness.

Type of screen

Front Projection Vs. Rear Projection: Which Is For You?
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Front projection does not need a special projection screen; regular screens can be used. These screens are easy to get, and are readily available in online stores.

On the other hand, special screens are required for rear projection. The reason is not far-fetched; rear projection screens work with a more advanced technology compared to front projection screens.

 Front projectionRear projection
Ambient
light
Ambient light has an effect on the image brightness and quality.Ambient light increases image brightness and contrast, especially if the light is contained behind the screen.
Viewing
angle
Viewing angle depends on the screen gainViewing angle depends on the ability of the projection screen to diffuse light.
SpaceThere is more space in front of the screen.There is less space in front of the screen.
BrightnessBright image; the image is brighter when the room is dark, or when a high-gain screen is used.Bright image at the viewer’s side.
Type of
screen
It does not require a special screen.It requires a special rear projection screen.

Is rear projection better than front projection?

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It cannot be concluded that one projection style is better than the other, since each has its pros, cons, and use cases.

For instance, rear projection is more suitable for making presentations, while front projection is better when projecting in a small room.

It all depends on the facilities that you have, if you have the facilities to accommodate a rear projection setup, then you should try it out. But if you don’t, you can do a front projection setup instead.

Conclusion

Choosing a particular projection style may be a bit confusing but it will be easier if you know how a particular projection style works.

Before choosing, consider the cost of setup, the space available and the amount of light interference that you may encounter. Also consider the availability of the projection screen.

Note that there are screens that support both front and rear projections, although they are a bit pricey. The projector type should not be a problem because most projectors support both styles of projection.


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