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BenQ Knowledge Center

Choosing Projector Screen Type, Size, Material, and More

BenQ
2019/10/09

If you care about enjoying your video content in the best quality possible, then you most likely already know that a projector is unbeatable for a truly cinematic experience. However, a great projector is only one piece in a multi-element projection system, as the screen onto which you display makes a world of difference.

Sometimes, after having invested in a top of the line projector, people forego a proper projection screen altogether. Projecting onto a wall or just a white surface has a significant negative impact on image quality. Notably, image contrast, resolution, and color reproduction suffer the most from using a surface not intended for projection.

Screen Style

There are two main styles or core designs of screens: fixed and retractable. The one that suits your needs best depends mostly on the room you intend to use for your projector. Also, retractable screens tend to cost more than fixed ones, which might be a crucial factor to keep in mind.

1. Fixed Screens

If you have the space available, it is always better to go for a fixed screen. A fixed screen is composed of an aluminum or wooden frame that very tightly holds the screen proper, which in turn is usually made of PVC. This setup offers a very smooth and even projection surface for the lowest price, in part thanks to its simple construction.

Additionally, from an installation point of view, it is easier to integrate. If you can hang a picture frame on a wall, then you already know how to install a fixed frame screen in your media room. Making sure that it is centered and at the right height is enough to have a high quality screen ready for your next viewing session.

The downside to fixed frame screens is their size. To put things into perspective, a 120" diagonal projection screen is approximately 2.65 meters wide. Such a big screen would look out of place in most living rooms.

2. Retractable Screens

If you do not have a dedicated media room, a retractable screen might give you the flexibility needed. This type of screen can be rolled down when you crave some movie enjoyment and then quickly rolled up and out of sight when you’re done. You can place such screens in front of any wall or even your already-there TV.

Retractable screens come in two main varieties: pull-up and pull-down. Pull-down screens can be wall or ceiling mounted, allowing you to keep the whole screen away from view in a recessed space in the ceiling. Pull-up screens, on the other hand, are usually placed on the floor behind your media center or integrated into a custom-made piece of furniture, magically popping out for movie time.

However, for any retractable screen, there are two additional aspects you should keep in mind. The first one is that to obtain the best performance out of a retractable screen, you should look for a tab-tensioned one. This type of screen has a system behind it to ensure that the surface is perfectly tight and flat when pulled out, while the whole tensioning system also moves out of the way when the screen is rolled in. Without tensioning, retractable screens tend to have curling and wrinkling that impact your video experience, creating distortions and image wobbling, most noticeable during panning shots.

The second important aspect is that any of these retractable screens can come in a manual or motorized variety. Manual screens are light, less expensive, and don't need any electricity to work, which makes them easier to install anywhere very quickly. Since there is no risk of a motor failing over time, they represent less maintenance and more years of service. On the downside, you have to get up from your seat and pull these screens out by hand before use, which can seem inconvenient when everything else has a remote control. Motorized projector screens exist to remedy that inconvenience. They offer the most stylish look for your home theater as they slowly and gracefully emerge from their enclosure for your movie session at the touch of a button. These electric screens can be rolled out by using either a remote control, a wall switch, or by connecting them to the 12V trigger port that is available on many projectors. You have to keep in mind that they require a power supply and also cabling if you decide to use the automatic trigger function. Motorized electric projector screens tend to be the most expensive but also offer the most functionality and flexibility of all types.

Screen Size

While bigger is usually better, the massive size of projector screens presents challenges not commonly found when using TVs that rarely exceed 75" diagonally.

The price difference between a 100" and a 120" projection screen is usually minimal, so you might want to go for the biggest size you can fit on your wall. However, it is advisable to pay attention to a few other factors when choosing an optimal size.

1. Viewing Distance

Even if your wall is large enough, bigger is better still may not always prove the best strategy. That is because the bigger the screen is, the longer the distance you need to sit away from it to watch comfortably. If your room is not large enough, you might be better off opting for a smaller screen.

To calculate the optimal viewing distance, we have to consider the field of view of the human eye. SMPTE (Society of Motion Picture and Television Engineers) guidelines recommend sitting at a range where the screen fills up a minimum of 30° of your field of vision, while THX recommends 40° for a more cinematic experience. An easy way to calculate this distance is multiplying the screen size by 1.2 for a cinematic viewing distance or 1.6 for standard usage. If you use the THX guideline, a 120" projection screen is best viewed from 144 inches or 3.65 meters away while a 100" screen gives you the best experience when viewed from three meters.

2. Aspect Ratio

Projector screens come in at least three different aspect ratios: 4:3, 16:9, and 2:35:1. Content formatted in 4:3 is standard in older TV shows and almost entirely out of use today, having been replaced by 16:9. However, if you want to feel like you’re at the movie theater, anamorphic 2.35:1 is the best choice.

Using a 4:3 screen to watch widescreen content would add black bars to the top and bottom of the image in what is known as letterboxing. Watching anamorphic content on a 16:9 screen would also require these black bars. It's worth mentioning that most TV shows today are 16:9, while most cinematic productions are still shot in 2.35:1.

To fill in the ultra-wide screen you’re using, you can make use of image zoom so that the black bars fall outside the screen. However, this could compromise image resolution by blowing up unwanted details and may also have a negative effect on brightness. If you want to avoid this, more advanced projectors are compatible with anamorphic lenses that change the image to fit just right on ultra-wide screens.

3. Projector Features

While we’re discussing how to choose a screen, you obviously should think about the many ways your projector will interact with whatever display you choose. Pay close attention to projector specs, in particular throw distance, brightness, aspect ratio support, and naturally resolution.

Screen Material Properties

One more essential thing to think about is screen material. Screen material has the potential to completely change image properties, so choose carefully.

1. Color

While the classic projection screen comes in white, you can get surfaces in a variety of colors for different applications. However, since we’re focusing on projection for home entertainment in this article, a white screen would serve you best.

2. Gain

Select screens have added effects applied to them to artificially boost brightness and support supposedly more emphatic HDR. However, this often has the downside of reduced viewing angles and hot spotting, whereby brightness isn’t even and certain parts of the image look unnaturally bright. We recommend neutrally-applied screen coating without a gain boost. With modern HDR-enabled projectors those fixes no longer have any tangible benefit.

3. Acoustic Screens

Typically, screens utilize a consistent fabric-like material to best block and reflect light. As such, they also block sound and thus require speakers be placed beside them or otherwise elsewhere in the room. Acoustic screens employ a mesh weave that attempts to balance reflectivity with sound transparency, or acoustic passthrough. In simpler terms, these screens try to provide a good image while allowing sound waves to pass through them so that you can save space by placing speakers directly behind the screen. Be advised your experience may vary greatly depending on acoustic screen build quality. To play it safe, we recommend purchasing a conventional fabric display.

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