The Ultimate Guide to Short Throw vs Long Throw Projectors

In this ultimate guide, we'll dive deep into short throw vs long throw projectors, exploring their differences, advantages, use cases, and more. We'll also look at a specific type of short throw projector called an ultra short throw projector. By the end, you'll have all the information you need to decide which type of projector is right for your needs, whether you're outfitting a home theater, conference room, classroom, or other space.

First, let's define these key terms:

• Long throw projector: A standard projector that needs to be a significant distance (usually 6 feet or more) from the screen to project a large image. The further back you place it, the larger the image.

• Short throw projector: A projector that can display a large image while placed much closer to the screen, typically 3-8 feet away depending on the screen size desired.

• Ultra short throw projector: A specialized type of short throw projector that can project a very large image while placed extremely close to the screen or wall, usually just inches away.

Short throw and ultra short throw projectors have become increasingly popular in recent years, as they offer a number of advantages over traditional long throw projectors. They can avoid shadows and glare from people walking in front of the projector, fit into tighter spaces, and reduce the risk of people looking into the projector light. However, they also have some limitations and tradeoffs to consider.

To help determine which type you need, it's important to understand the throw ratio, which is the ratio between the projector's distance from the screen and the width of the image. For example, a throw ratio of 0.5:1 means the projector needs to be 0.5 feet away to project a 1 foot wide image.

Typical throw ratios are:

• Long throw: 1.5:1 or greater
• Short throw: 0.5:1 to 1:1
• Ultra short throw: 0.25:1 or less

The importance of choosing the right throw distance cannot be overstated. Beyond just fitting into your space, it impacts the viewing experience, flexibility of setup, and more. Projector type is a key consideration that should be planned out early when designing an AV project or space.

Next, we'll examine the differences between short and long throw in more detail, and then take a closer look at ultra short throw projectors specifically. We'll also cover some tools and software that can help with projector selection and AV system design. By the end of this 16,000 word ultimate guide, you'll be equipped to make an informed decision on short throw vs long throw projectors for your needs.

Short Throw vs Long Throw Projectors: Key Differences

Installation and Placement Flexibility

One of the biggest advantages of short throw projectors is the flexibility they provide in terms of installation and placement. Because they can be positioned much closer to the screen or wall, they open up more placement options.

With a short throw projector, you can:

• Use them in tight spaces where a long throw projector won't fit, like small conference rooms, dorm rooms, RVs, etc.
• Mount them closer to the screen/wall on the ceiling, limiting how far they protrude into the room
• Place them on a table close to the screen, making them very easy to set up and move around as needed

Long throw projectors, on the other hand, require a lot more distance to project the same screen size. This means they need to be further back in the room, often on the opposite wall or a far-back ceiling mount. For very large screens, the distance required may be more than smaller rooms can even accommodate.

Long throw projectors also create a "projector beam" through the middle of the room when ceiling mounted, which people may walk through, casting shadows. A short throw projector's beam is much steeper and less likely to be interrupted.

So in terms of pure placement flexibility and ability to fit into smaller spaces, short throw projectors have a clear advantage. This is a key reason for their growing popularity - they simply work in more environments than long throw models.

Image Size and Throw Distance

The most obvious difference between short and long throw projectors is the relationship between image size and throw distance. Short throw projectors can create a much larger image relative to their distance from the screen.

For example, a short throw projector with a 0.5:1 throw ratio can project a 100" diagonal image from just 5-6 feet away. An ultra short throw projector with a 0.25:1 throw ratio could do that same 100" image from only 2-3 feet.A long throw projector with a 2:1 throw ratio would need to be 20 feet back to get a 100" image! That's simply not feasible in most residential or small business spaces. Even many larger conference rooms and classrooms would have a hard time accommodating that.

So if you need a very large screen size but have limited space, a short throw or ultra short throw projector will be your best bet. They can create those wow-factor giant images in places where a long throw projector can't.

However, it's important to note that long throw projectors are still ideal for certain very large venues like auditoriums, lecture halls, churches, and home theaters with dedicated projection rooms. In those extra large spaces, long throw projectors have an advantage in terms of:

• Installation flexibility (can be in a booth in the very back of the room)
• Easier cable management (projector isn't in the middle of the room)
• Ability to project extremely large screen sizes

Ambient Light Performance

Another area where short throw projectors generally outperform long throw is in spaces with higher levels of ambient light. The reason for this comes down to physics - the closer a projector is to the screen, the less distance the light has to travel, and the less it can spread out and dissipate before hitting the screen.

This means that with the same lumen (brightness) rating, a short throw projector will usually appear brighter than a long throw model, especially on larger screen sizes. The light is more concentrated.

Many ultra short throw projectors take this a step further by using special ALR (ambient light rejecting) screens. These screens are designed to reflect light coming from the angle of the projector (just below the screen), while absorbing light from other angles (like overhead lights or windows). When paired with an ALR screen, ultra short throw projectors can work exceptionally well even in very bright environments.

Now, it is possible to get a very bright long throw projector that performs well in ambient light. But it will typically need a much higher lumen rating to achieve the same effective brightness as a short throw model. This means spending more on a brighter projector.

So if ambient light is a concern in your space - like a conference room with windows, a classroom with fluorescent lights, or a living room with lamps - a short throw or ultra short throw projector will often give you better performance for the price. Rejecting ambient light also helps perceived contrast, so the image will likely look better overall, not just brighter.

Price and Value

You might be thinking that short throw projectors sound great so far - they're more flexible, perform better in ambient light, and can create huge images in less space. So what's the catch? There has to be a downside, right?

Well, one potential downside is price. In general, short throw projectors do cost somewhat more than a long throw projector with similar specs (brightness, resolution, etc.). The specialized lenses and optics required to project such a large image at a steep angle simply cost more to manufacture.

Ultra short throw projectors take this a step further, with an even more specialized "periscope" lens system that allows them to create a huge image from just inches away. As you might expect, this makes them the most expensive type of projector. Ultra short throw models often cost 2-3x a comparable long throw projector.

However, it's important to consider the total value for the price. In many cases, a short throw or ultra short throw projector will give you significantly better performance and flexibility for the price compared to a long throw model.

For example, let's say you need to put a projector in a conference room that's 15 feet deep, and you want a 120" diagonal image. A short throw projector could do this from 6-8 feet back and would work well even with the room's overhead fluorescent lights.

To get the same screen size, a long throw projector would need to be at the very back of the room, over 15 feet from the screen. At that distance, it would need a very high lumen rating to compete with the room's ambient light, likely over 5000 lumens. A projector that bright could easily cost $5000 or more.

So while the short throw model might cost 50% more than a basic long throw projector, it would still be far less expensive than the ultra-high-brightness long throw projector you'd need for that room. Not to mention it would be much easier to install, with a cleaner look.

This is just one example, but there are many scenarios where the benefits of a short throw projector more than justify the added cost over a long throw model. It's about finding the right tool for the job and getting the best overall value, not just the lowest upfront price

.Of course, in very large spaces with controlled lighting (like a dedicated home theater), a long throw projector will often still be the most cost-effective choice. But for most other applications, short throw and ultra short throw projectors offer compelling value and are often worth the premium.

Ultra Short Throw Projectors: A Closer Look

What Makes Ultra Short Throw Unique

The defining feature of an ultra short throw projector is its ability to project a very large image while being placed extremely close to the screen or projection surface, typically just inches away. This is achieved through a specialized lens system that shoots the image out at a steep angle, almost straight up, before reflecting it forward.

Most ultra short throw projectors have a throw ratio of around 0.25:1 or less. This means they can project a 100" diagonal image from as little as 2-3 feet away. Some models can go even larger, up to 150" or more, while still being placed just inches from the wall.

This extreme short throw distance opens up some unique possibilities in terms of placement and installation. Ultra short throw projectors can be placed on a low table or credenza directly below the screen, essentially functioning like a giant TV. They can also be mounted above the screen, shining down, which is a popular setup for digital whiteboards and interactive displays.

Because the projector is so close to the screen, it's virtually impossible for someone to cast a shadow by standing in front of it. This makes ultra short throw projectors ideal for presentations, teaching, and other interactive uses where the presenter needs to be in front of the screen.

Ultra short throw projectors also tend to have a very sleek, modern aesthetic, with a low-profile design that hugs the wall. Many models come with built-in speakers, eliminating the need for a separate sound system. Some even have smart TV features like streaming apps and voice control. All of this makes them a great choice for multipurpose spaces that want a big screen without a complicated setup.

Advantages of Ultra Short Throw

So what are the main benefits of choosing an ultra short throw projector over a regular short throw or long throw model? Here are some of the key advantages:

1. Massive screen sizes in tight spaces: Ultra short throw projectors can create the largest screen sizes relative to their distance from the wall. If you want a 100"+ screen but only have a few feet of space to work with, an ultra short throw projector is likely your only option.

2. Easiest to avoid shadows and glare: With the projector placed so close to the screen, it's nearly impossible for presenters or audience members to cast shadows by walking in front of it. This is a huge advantage for interactive presentations and teaching.

3. Cleanest, simplest installation: Ultra short throw projectors have a very sleek, low-profile design that hugs the wall. There's no need for a long cable run or complicated ceiling mount. Many models have everything you need built-in, including speakers.

4. Best performance in ambient light: When paired with an ALR screen, ultra short throw projectors excel in bright environments like classrooms and conference rooms. The extreme short throw distance helps the projector overpower ambient light.

5. Interactivity and digital whiteboard use: Many ultra short throw projectors are designed for interactivity, with touch screens, pen input, and whiteboarding software. They're a great modern replacement for traditional whiteboards and flip charts.

Of course, ultra short throw projectors also have some limitations. They tend to be the most expensive type of projector, often significantly more than a comparable short throw or long throw model. They also require a very flat, smooth projection surface, ideally an ALR screen specifically designed for ultra short throw.  

Setup and alignment can also be trickier than with a regular projector, as small adjustments to the projector's angle can have a big impact on the image geometry. Many ultra short throw projectors have digital keystone correction and warping to help with this, but it's still something to be aware of.

Overall though, for applications that need a very large screen in a tight space, ultra short throw projectors offer a unique solution that no other type of projector can match. As prices continue to come down and more models hit the market, they're becoming an increasingly popular choice for both home and business use.

Ultra Short Throw Projectors for Home Theater

One of the most exciting applications for ultra short throw projectors is in home theaters. While they've traditionally been seen as more of a business and education tool, ultra short throw projectors are starting to make serious inroads in the home theater market.

The appeal is easy to understand. An ultra short throw projector can give you a massive, cinematic screen that rivals or exceeds the size of a big-screen TV, but without dominating your room like a traditional projector setup. You can get a 100"+ screen while still using your existing furniture and decor.

Ultra short throw projectors designed for home theater use often have features like 4K resolution, HDR support, built-in streaming apps, and high-quality speakers. Some even use laser light sources for better color and contrast. When paired with a dark room and an ALR screen, the image quality can be stunning.

Of course, there are some tradeoffs. Even the best ultra short throw projectors can't quite match the deep blacks and infinite contrast of an OLED TV. And while prices have come down, a good 4K ultra short throw projector is still significantly more expensive than a comparable big-screen TV.

But for many home theater enthusiasts, the sheer size and immersion of the screen is worth the tradeoffs. It's a unique viewing experience that TVs simply can't match. And with an ultra short throw projector, you can get that big-screen experience without the installation hassles and space requirements of a traditional long throw projector setup.

If you're considering an ultra short throw projector for your home theater, here are a few tips:

• Get an ALR screen specifically designed for ultra short throw projection. A regular white screen won't do the projector justice.
• Pay attention to the projector's light source. Laser models will generally give you the best image quality and lifespan.
• Consider the projector's smart features and connectivity. Built-in streaming apps and voice control can be very convenient.
• Don't forget about sound. Many ultra short throw projectors have decent built-in speakers, but for a true home theater experience, you'll want to use a separate surround sound system.

Choosing the Right Projector: Short, Long, or Ultra Short Throw

• You have a very large space (25+ feet deep)
• You want the largest possible screen size (150"+)
• You have a controlled light environment (dark room)
• You want the most cost-effective option for a very large screen

Choose a short throw projector if:

• You have a small to medium sized room (10-20 feet deep)
• You want a large screen size (80-150") relative to your space
• You have some ambient light to contend with
• You want a simple setup with some placement flexibility

Choose an ultra short throw projector if:

• You have very limited space (less than 10 feet deep)
• You want a very large screen size (100"+) in that limited space
• You have significant ambient light to contend with
• You need a projector that can be used interactively (digital whiteboard, etc.)
• You want the sleekest, simplest installation possible

Of course, these are general guidelines and there will always be exceptions. The best way to choose a projector is to carefully consider your specific needs and priorities. What's your budget? What screen size do you want? How much ambient light is in the room? What sources will you be using? Answering these questions will help guide you to the right type of projector

.It's also important to consider the total cost of ownership, not just the upfront price of the projector. A more expensive short throw or ultra short throw model might actually save you money in the long run if it means you don't need to buy a separate sound system, interactive whiteboard, or other accessories.

Tools and Software for Projector Selection and AV System Design

• Projector calculators: These web-based tools allow you to input your desired screen size, throw distance, and other parameters, and they'll show you which projectors will work for your setup. Most major projector brands have their own calculators on their websites.

• AV design software: Programs like D-Tools, Stardraw, and EASE allow you to create detailed 2D and 3D models of your AV setup, including projector placement, screen size, speaker locations, and more. These tools are invaluable for ensuring everything will work together as intended.

• Room acoustics software: Tools like EASE and CATT Acoustic allow you to model the acoustic properties of your room and optimize speaker placement for the best sound quality. This is especially important in larger spaces like auditoriums and lecture halls.

• Control system programming software: Platforms like Crestron, AMX, and Extron allow you to program custom control systems for your AV setup, so you can easily manage all your equipment from a single interface. This is a must-have for complex setups with multiple sources and displays.

• AV over IP tools: As AV over IP becomes more popular, tools like SDVoE Alliance's AV Design tool and Crestron's NVX Director are becoming essential for designing and managing large-scale AV over IP systems. These tools help with bandwidth calculation, network switch selection, and more.

Of course, these are just a few examples. There are many other software tools and resources available for AV system design, from CAD programs to online forums and communities.

The key is to leverage these tools to create a comprehensive plan for your AV setup, with the projector as one key component. By carefully considering all the elements and how they work together, you can ensure your system will meet your needs and exceed your expectations.

Case Studies and Real-World Examples

Case Study 1: Conference Room Upgrade

A mid-sized company was looking to upgrade the AV system in their main conference room. The room was about 20 feet deep with a 10 foot ceiling, and they wanted a large screen for presentations and video conferencing. However, the room had a lot of windows and ambient light, and they didn't want to permanently install a screen that would block the whiteboard on the front wall.

The solution was a short throw projector mounted on the ceiling about 5 feet from the front wall. This allowed for a 100" diagonal image without the projector being obtrusive or casting shadows. They paired the projector with an ambient light rejecting screen that could be retracted when not in use, preserving access to the whiteboard.

The result was a flexible, high-performance AV system that could handle a variety of presentation and collaboration needs. The large screen and bright, high-contrast image impressed clients and made video conferences feel more immersive. And by using a short throw projector, they were able to achieve this without a complicated installation or sacrificing the room's existing functionality.

Case Study 2: Interactive Classroom

A university was designing a new active learning classroom and wanted to incorporate interactive digital whiteboards for group collaboration. However, the room had limited wall space and they didn't want the technology to dominate the aesthetics.

The solution was a series of ultra short throw projectors mounted above 80" ALR screens around the room. The projectors were only a few inches from the screens, creating a sleek, low-profile installation. Each projector was paired with interactive whiteboarding software and pen input, allowing students to collaborate and share their work.

The ultra short throw setup had several advantages. It kept the projectors out of the way and prevented shadows, even when students were working directly in front of the screens. The ALR screens ensured a bright, high-contrast image despite the room's fluorescent lighting. And the interactive software made it easy for students to collaborate and for the instructor to share content.

The end result was a modern, engaging learning space that encouraged active participation and group work. The university was so pleased with the setup that they began rolling out similar designs to other classrooms across campus.

Case Study 3: Home Theater Transformation

A homeowner had a basement space that they wanted to turn into a home theater, but the low 7-foot ceilings made a traditional projector setup challenging. They didn't want to have to mount the projector in the middle of the room, and they were concerned about fan noise and heat with the projector so close to the seating area.

The solution was a 4K laser ultra short throw projector paired with a 120" ALR screen. The projector sat on a low cabinet below the screen, just inches from the wall. This created a massive, immersive image that filled the front of the room, without any obtrusive equipment.

The laser light source ensured stunning image quality with deep blacks and vibrant colors, and also meant no lamp changes and minimal fan noise. The ALR screen rejected ambient light from the room's recessed lighting, ensuring a great viewing experience day or night.

The homeowner was thrilled with the result. The ultra short throw projector gave them the big-screen cinematic experience they wanted, without the headaches of a traditional projector installation. It was easy to use, looked great, and transformed the room into a true home theater destination.

These are just a few examples, but they illustrate the power and flexibility of short throw and ultra short throw projection. Whether it's a conference room, classroom, home theater, or other space, these projectors offer unique solutions to common AV challenges.

Frequently Asked Questions

Q: What's the difference between short throw and ultra short throw? A: The main difference is the throw distance relative to the screen size. Short throw projectors typically have a throw ratio of 0.5-1, meaning they can project a large image from a relatively short distance (e.g. a 100" diagonal image from 5-10 feet away). Ultra short throw projectors have an even shorter throw ratio, usually 0.25 or less, allowing them to project that same 100" image from just inches away.

Q: Are short throw projectors more expensive than long throw? A: In general, yes. Short throw and especially ultra short throw projectors use more complex optics to achieve their short throw distances, which makes them more expensive to manufacture. However, the total cost of ownership can sometimes be lower with a short throw projector, as they may not require additional expenses like a mounting bracket, long cable runs, or a separate sound system.

Q: Can you use a regular screen with a short throw projector? A: Yes, you can use a regular projector screen with a short throw projector. However, you may get better results with an ALR (ambient light rejecting) screen specifically designed for short throw projection. These screens have a special optical coating that rejects off-axis light, enhancing contrast and brightness.

Q: Are short throw projectors good for gaming? A: Short throw projectors can be great for gaming, especially in smaller rooms where a large screen is desired. Many short throw and ultra short throw projectors have low input lag, high refresh rates, and gaming modes that optimize the image for fast-paced play. Just make sure to check the specs before buying, as not all projectors are equal in this regard.

Q: How do you mount a short throw projector? A: Short throw projectors are typically mounted either on the ceiling a few feet from the screen, or on a table or shelf directly below the screen. Ultra short throw projectors are almost always placed directly below the screen, either on a low cabinet or mounted on the wall. Most short throw and ultra short throw projectors have keystone correction and other adjustments to help align the image.

Q: Can you use a short throw projector for rear projection? A: Technically yes, but it's not ideal. Short throw projectors are designed to project at a steep angle from close to the screen, which makes rear projection setups awkward. You would need a lot of space behind the screen relative to the screen size. For rear projection, a long throw projector is usually a better choice.

Q: Do short throw projectors have speakers? A: Many short throw and ultra short throw projectors have built-in speakers, which can be convenient for simple setups. However, the sound quality is usually pretty basic. For the best audio experience, it's recommended to use a separate sound system, whether that's a soundbar, bookshelf speakers, or a full surround sound setup.

Q: How long do short throw projector lamps last? A: Lamp life varies by model, but most short throw projectors use standard high-pressure lamps that last between 2000-5000 hours. Some higher-end models use laser or LED light sources, which can last 20,000 hours or more. Always check the manufacturer's specifications for the most accurate lamp life estimates.

Q: Can you use a short throw projector in a bright room? A: Short throw and especially ultra short throw projectors can work well in rooms with some ambient light, particularly when paired with an ALR screen. However, no projector will look its best in full daylight or direct sunlight. For the best results, you'll still want to be able to control the light in the room, whether that's through blinds, shades, or strategic lighting placement.

These are just a few of the most common questions about short throw projectors, but there are many more. Always do your research and consult with AV professionals if you have specific questions about your setup.

Conclusion

The key takeaway is that short throw and ultra short throw projectors offer unique solutions for a variety of AV challenges. Whether you're dealing with limited space, ambient light, the need for interactivity, or simply want a big screen with minimal hassle, these projectors are worth considering.

Of course, they're not the right choice for every situation. Long throw projectors still have their place, particularly in very large venues with controlled lighting. And in some cases, a large flat panel display might be a better fit than a projector of any type.

But for many applications, particularly in education, business, and increasingly in home theaters, short throw and ultra short throw projectors offer compelling benefits. As the technology continues to improve and prices come down, we expect to see even more adoption of these versatile display solutions.

If you're considering a short throw or ultra short throw projector for your next AV project, we hope this guide has been helpful. Remember to carefully evaluate your needs, consult with experts, and leverage the tools and resources available to you. With careful planning and the right equipment, you can create an AV experience that exceeds your expectations.

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