Lux vs lumens projector is a common confusion among consumers that arises when a consumer buys a projector for the first time. Both lux and lumens are popular terms that are used by manufacturers to denote the brightness of their projectors. Basically, it denotes the amount of brightness offered by the projector.
Although both of them depict brightness levels, they are quite different in some aspects. So, I’m going to discuss the difference between lux and lumens to give you a broad idea about them. Nowadays, consumers are getting more aware of the products they are buying, so it has become essential to highlight this type of aspect.
Measuring Brightness of a Projector
There are many ways to measure the brightness of a projector, and each of the terminologies has its own ways. So first, let’s check all those terminologies;
- Lux – Lux is a standard unit of measurement of brightness, and it depicts the total amount of light that will be reflected on the screen.
- Lumens- Lumens is also another unit that depicts brightness. It is a measurement of all the light that is visible to the human eye after reflection in all directions.
- ANSI Lumens- ANSI lumens are the most common unit among all, and it depicts the total amount of light produced by a projector. It serves as the standard and most accurate one.
- Nits- Nits is another term that is often used to depict brightness, and it measures the brightness produced in a particular area.
- Foot Lamberts- Foot lamberts are also a brightness measuring unit, and it serves as an alternative to Nits which are used in the US.
What Do You Mean By Lux?
Lux is one of the most common units used to describe the brightness over a particular area on the projector screen. In other terms, lux measures the amount of light that reflects over an area of the projector’s screen. Basically, the brightness level associated with the Lux unit tells you how your eye will see the light intensity by measuring the amount of light falling on the projector’s screen or any other surface.
It is also an SI unit of illuminance, which describes the total luminous flux fall on a unit surface area. Lux varies widely by your viewing distance because the lux is mainly on the higher side when you are close to the projector but goes down when you are away. However, for small spaces, there is no variation in Lux, and you will get an equal amount of brightness.
Even though projector lux is an SI unit, nowadays, only a limited number of manufacturers use this unit to describe brightness. Despite everything, a lux is still a popular unit, and many consumers consider them when buying a projector.
What Do You Mean By Lumens?
Well, if you are using a projector, you must have come across the term Lumens which is widely used by manufacturers to describe the brightness capacity of a projector. Lumens are the measure of the total amount of visible light produced by the projector that a human eye can perceive. You will be surprised to know that lumens are also an SI unit of luminous flux, which denotes the total amount of visible light produced by a light source per unit of time.
Basically, manufacturers use lumens for their projector to describe how bright the projector will be when it projects something on the screen. However, you should remember that this SI unit doesn’t consider the actual intensity of light produced by the source. Due to this, lumens are considered to be more accurate than lux, and this is the reason manufacturers prefer using lumens to describe brightness levels.
Notably, the term lumens is more prevalent among consumers; thus, the trust factor is on the higher side. For example, if a buyer goes out to buy a projector, he will look for lumens to evaluate the brightness of the projector.
Now, the question arrives.
Lux vs Lumens: Which One You Should Choose?
The confusion of Lux vs lumens is widely faced by users as both of them serve as the SI unit for measuring the brightness level of a projector. Although both of the units indicate the projector’s brightness, they have some differences. Lumens basically define the total amount of visible light emitted from a source while taking human eye sensitivity into account.
Lux, on the other hand, is the total measure of the brightness of the light coming from the source. You can understand that lumen remains constant for a projector, whereas lux changes according to the distance and placement. Although lumens might seem more accurate than lux, they denote different brightness levels of a projector.
They both measure the illuminance of the light source but in different contexts. However, lumens are always considered over Lux because it offers better accuracy and gives you a better idea about the brightness output of the projector. With Lux, you can’t be sure about brightness level, especially when the manufacturer doesn’t mention the spread of light over an area’s effect on brightness level.
Importantly, when you go for large image size, the further you put the projector away from the screen, the lux will reduce gradually. However, lumens remain constant at all distances. So if you are buying a projector and want to stay assured about the true brightness level, it would be wise to consider lumens because it offers better accuracy.
What Do You Mean By ANSI Lumens?
The ANSI lumens is another terminology that has confused many new consumers when they are about to buy a projector. Many consumers not only confuse them with lumens quality but also think ANSI Lumens and normal lumens are the same. Although they both bear the same terminology, ANSI lumens are not the same as normal lumens, as the former takes a lot of factors into account during brightness level calculation.
ANSI stands for American National Standards Institute, and this organization is responsible for measuring the brightness of a projector under various circumstances. The process they employ is quite complex as it has numerous components, and they take the average as well as multiplication of all the measurements to give you an accurate brightness level.
Thus, ANSI lumens are not only more accurate than standard lumens counts but also give you a better idea about the brightness level you will get in every situation. With this terminology, you can say that the higher the projector’s ANSI lumens, the better brightness level you will get. Thus, nowadays, most top manufacturers are mentioning ANSI lumens for their projectors because many consumers trust ANSI lumens more than other units.
In ANSI lumens vs Lux or lumens, ANSI lumens always have more priority and clarity. Moreover, it is also becoming a standard for top manufacturers as it states the integrity of the organization and also the product they are offering.
How Many Lumens Do Your Projector Need?
When you are choosing a projector, whether it is for home, outdoor, office or classroom, a lot of factors come into play. One of them is the brightness, and the amount of brightness you entirely depend upon how you will use the projector.
Different projectors have different brightness as there is no standard brightness level for every type. Every setup has its own requirement, especially brightness, because the situation varies. So let’s check how many lumens you will need for different setups;
- Home Entertainment- You will need a minimum of 1500 ANSI lumens or 2000 lumens in your projector to have a clear and sharp image quality for enjoying your movies.
- Gaming- When you want to use your projector mostly for gaming, it would be best to go for a minimum of 2000 ANSI lumens or 2500 lumens to get an immersive view.
- Business Presentation- During business, you will need a fair amount of lumens from your projector to create a vivid and rich visual output. 1500 ANSI lumens or 2000 lumens is reasonably sufficient for this purpose.
- Classroom- A projector intended for a classroom projector will require a minimum of 25000 ANSI lumens or 3000 lumens for a beautiful image output without any fading.
- Outdoor- A minimum of 2000 ANSI lumens or 2500 lumens will be needed if you think of using the projector in the outdoor area.
Apart from the setup, the resolution you will be using, content you will see, and ambient light around the setup also play an important role. These factors also affect the number of lumens you will need in your projector to get a bright view. Let me explain what I tried to mean about these factors;
- Resolution You Will Be Using- The resolution you will be using has an effect on the brightness level, and it is always preferable to have a high resolution. When you are going for a high resolution like 4K and full HD, you will need a good amount of brightness, around 1500 ANSI lumens.
- Ambient Light Around The Setup- The amount of lumens you need in your projector also depends upon the ambient around the setup. Although you can control ambient light in indoors, you can stay particular about outdoor ambient light, so you will always need high lumens to overcome ambient light intrusion.
The higher the amount of light that comes in the way of the projector, the higher the number of lumens you will need in your projector. However, too many lumens can have a detrimental effect.
- Contents You Want To See- The contents you want to see will also determine the number of lumens you will need. If you want to watch only movies and TV series, then you won’t need high lumens. Similarly, when you want to display documents without any image, a small number of lumens would do the job. However, for displaying data images, you will need high lumens in the projector.
The comparison of lux vs lumens projector is quite useful for buyers, especially for new consumers who are getting a projector for the first time. From lux to lumens projectors, the process of buying the suitable model can be tricky. So I hope I have been able to answer what is a good lux for a projector or how many lumens you will need in your projector.
Hello, I’m Mr. James Hanson and I have been associated with projector industry for decades. From tender age, I had a huge knack towards projection hardware so gradually I was drawn into the industry. After I have left my college, I have worked with many projector manufacturers so I’m using that experience to create guide in this site. I have always kept myself with current tech and change in this segment.