The only drawback of the 24V LED strip is that the cutting increment is greater than that of 12V. The 24V LED strips are usually cuttable for every 6 or 8 LEDs. However, we specially designed a 5050 24V LED light strip with Two LEDs One Cut, achieving a remarkable cutting increment of 1.34 inch(34mm). This increment is even much shorter than the regular cutting increment of a 12V LED strip, which is usually 2 inches. The special design has effectively satisfied the customer's need for the installation length accuracy. So this shortcoming of 24V LED strip is negligible.

But this is also not always possible. The sun can also be the main subject of photography. And it is even more difficult to beautifully photograph the clouds through which the sun breaks through because they make the glow even stronger. To solve this problem, I recommend using negative exposure compensation. You can also rebalance it with Luminar Neo if necessary. This is a great app to help you create incredible pictures.

One of the common problems when creating backlighting pictures even in manual mode is the limited dynamic range of the camera. Because of this, the photos are overexposed. Luckily, this is an easy fix in Luminar Neo. I recommend shooting in RAW format to give you more room for manipulation when processing photos.

The studio backlight in photography can also be helpful if you need to highlight some objects in the background. For example, direct light on a theater stage gives the impression that the actors and sets are flat. At the same time, lighting behind the back creates an entirely different effect. In studio photography, it works the same way.

For example, one meter of a 24V LED strip has the power 12W and produces 2000lm. Its luminous efficacy equals 2000 lm / 12W = 167 lumens/watt. This is a high efficacy LED light strip.

You can take really decent pictures using a backlight when you understand all the tricks of using it. The easiest option would be to use a flash. In this case, the face of your model will be as bright as the background. And you can use all the advantages of such a technique. But most importantly, it will be necessary to ensure that the backlit portrait does not turn out overexposed. To avoid this, set the impulse to a lower power.

But you should not be afraid to use such a light. After all, everything happens for the first time. And without mistakes, the creative process does not exist, right? If you use back light in photography correctly, it can make photos genuinely magical and bring them to life.

But flash may not always be at hand. To get high-quality back light photos without using a flash, you need the specific camera settings:

Multiple strips are sometimes connected to the same feed point, which is more convenient for installation. The 12V LED strip has a larger current, which easily exceeds the current limit of the feed point if many strips are installed. For the above reason, 24V LED strips require fewer feed points, and current requirements for feeder lines are lower than the 12V strips. This is why 24V LED strips are more suitable for large scale installation.

Although the universal Color Rendering Index (CRI) of International Commission on Illumination (CIE) has long been widely used, its limitations have been recognized. CRI is based on eight pastel colors, but the number of colors people often see are much more than eight, it is in millions. The colors are also not pastel colors but rather in full saturation. Another limitation is that CRI is only comparable under the same color temperature.

You can also narrow the field of view by pushing the sunlight out of the frame. In this way, you can take beautiful pictures of the web because it can be completely invisible without lighting from behind.

There are no regulations of CRI on some occasions, such as outdoor lighting. Some have made detailed regulations, especially for indoor lighting. For example, in the home environment, the lights with a CRI above 80 has become a customary requirement. Therefore, a higher efficacy than a conventional light source and a color rendering index greater than 80 seem to be a measure of the white LEDs for indoor lighting.

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At the same time, you have complete control over the shot's exposure thanks to the Relight AI tool, which forms a 3D model of the space to achieve even better results. This way, you can perfectly balance the background and foreground and set different light sources to make your backlight pictures look as realistic as possible.

Examplesofbacklightingin film

2. Many 24V LED strips can be made as long LED light strips up to 10 meters in continuous operation length, some can even be even longer, reach 20 meters, therefore fewer power feed points are required than for 12V LED strips. For 24V DC LED strips, the current that flows through the line is only half of that with 12V light strips. When installing multiple light strips, the required total current is smaller than their 12V counter parties.

Traditionally, there was a certain trade-off between light efficacy and color rendering index for LEDs. The technology development of LED has made great progress in balancing the two. While the LED efficacy has been greatly improved, the CRI has also made great process. The CRI has already reached the vision health standard. LEDs with super high CRI have been used more and more in many applications. Therefore, when looking at the LED efficacy, we must pay attention to its color rendering index. Talking about the efficacy without mentioning color rendering index has no meaning.

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Another case of using backlight is if you need to achieve clear and aesthetically defined silhouettes in the picture. If you want to create this effect, you must darken the subject you are shooting as much as possible. Small details, in this case, will not play an important role. For this reason, when creating a silhouette, you do not have to think about exposure compensation settings.

With the help of a backlight, you can photograph the model's silhouette and any object of nature. In this case, the thing will be darkened to the maximum extent and surrounded by a luminous halo. When shooting objects of nature, this technique will add a magical effect.

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This is logical since such lighting is risky and, if misused, can completely spoil the shooting. Therefore, it is better to start using such a technique if you already have experience in photography. Not knowing all the nuances of backlight photography, you can get not a luxurious and exciting picture but an ordinary dark spot.

To achieve the even distribution of light, it is necessary that the sun is entirely behind the girl or slightly to the side of her. Here you only need to experiment and choose the best location for the light source.

Usually speaking of contra-jour lighting, they mean shooting outdoors in bright sunlight. However, many photographers use backlighting in the studio. Yes, the backlight can be not only a natural source but also an artificial one. In the event that when shooting, you use four light sources, then the backlight will need to be placed directly behind the model.

Luminous efficacy, referred to as light efficiency, is the ratio of the luminous flux emitted by an electric light source to the electrical power the light source used. The unit is lumens per watt (lm/W), which is the luminous flux per watt for the luminaire, which measures how many lumens of light is produced by a light source when it consumes one watt of power energy. It is the most important technical parameter for evaluating the electrical efficiency of 24V LED strip lights.

You probably already know that shadows provide volume in photographs. If the subject is directly in front of the source, then there will be almost no shadows in the picture, and when lit from the side, the shadows in the photographs become very difficult to control. And when the main light source is behind the subject, you can control the shadows in the picture with ease. To lengthen the shadows or vice versa to make them shorter, you can change your position relative to the subject just a little bit: sit down, move away, or tilt the camera.

Every professional photographer knows that if the sun shines directly in your eyes, it does not mean that you can forget about the shooting. After all, you can turn it in a favorable direction. This is what they call backlit lighting: such a lighting situation when the source of light is from behind the subject.  Backlighting photography is when the light source is positioned behind the subject. It creates more depth and shape in the subject.

Therefore, in terms of brightness alone, of course, the higher the luminous efficacy, the greater the brightness of 24V LED strips with the same power rating. In other words, the high efficacy LED light strips use less power when the same brightness is produced. However, the quality of the LED strip lights also depends on the lifetime, the comfort of the light emitted, etc.

Gain instant access to simple yet powerful tips for enhancing composition, lighting, and editing—everything you need to transform your photos effortlessly!

Side lightingexamples

In addition, if you are a beginner and have made a mistake, you can always fix the exposure settings with photo editing tools like photo light adjustment online. One of the best ways is to use Luminar Neo.

3. High luminous efficacy and high CRI are the key factors of 24V LED strip quality. White light with high efficacy and high CRI and in line with the lighting environment or the object illuminated is the best white light.

2. 24V LED strips achieve high efficacy and high CRI at the same time. High efficacy and high CRI (color rendering index) are key indicators of LEDs. LED strip lighting products have become the trend of new lighting standard for the industry. Products with high luminous efficacy and good color rendering index have already occupied an important position in indoor and outdoor lighting, showing great results and strong advance momentum.

NB! In no case do not confuse backlight with background light in photography. These are entirely different things. A backlight is needed to highlight the background, and the backlight is required to make photography look dramatic. It is a full-fledged artistic medium of the picture.

Heat is the number one killer for LEDs. It deserves special consideration when designing waterproof LED strips. Otherwise, the high-heat of the waterproof light strip will shorten the LED's lifetime, and even burn the LEDs in the worst case. So we have to consider how to reduce heat when designing the 24V LED strip lights. The best option is to choose high efficacy LEDs. Choosing high efficacy LEDs can reduce the power of the 24V LED strip to a certain level while still emitting a large amount of light, which can perfectly serve the purpose to achieve high brightness and great waterproof performance simultaneously.

But like any other type of lighting, contra-jour requires a specific skill to do it well. I will tell you how to take fantastic backlit pictures in this article. Let's start with the backlighting photography definition.

Both light efficiency and CRI are important, so let's also briefly talk about CRI here. CRI stands for Color Rendering Index, which indicates how well a light source faithfully renders nearby colored objects. The range of CRI values is 0-100, the bigger the better.

The backlight type can be used not only when shooting portraits but also when photographing landscapes. The entire surrounding space becomes enchanting when sunlight shines directly into the lens. Especially luxurious pictures can be taken when the sunlight comes from the clouds.

1. High efficacy is related the brightness and heat generated by 24V LED strips. High efficiency plays a very important role in certain strip lighting applications. High efficacy LEDs are irreplaceable in bright light strip designs. In wet locations and outdoor LED strip light applications, we sometimes need very bright waterproof LED strips. We know that very bright LED strips generally require large power support, otherwise the LEDs cannot reach its designed high output. The large power usually means that LED strip lights will generate a great deal of heat, as the waterproof material is not good at heat dissipation.

There is another option that is more complicated than the first one. It gives the model's face the same shade as the sky at sunset. To do this, you will need an external flash, which must be controlled using the camera. This flash should be placed as close to the model as possible, attach a diffuser, screw on the desired shade's light filter, and take a series of shots. It must be stunning!

Backlit photo frame

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CRI has gained increasing attention in the current lighting applications. Especially in the indoor environment, the requirement for higher color rendering ability has become more and more demanding. For example, a low-pressure sodium light has a luminous efficiency of nearly 200 lm/W, but the monochromatic yellow light makes it only suitable for road lighting and few other occasions. The US Department of Energy (DOE) has raised the CRI for indoor lighting from 70 to 80 for the purpose to protect the vision health.

Through the calculation formula we can see, the greater the luminous flux value per watt of energy used, the higher the luminous efficacy of the LED light source.

3. The operating voltage of the LED strips with high luminous efficacy is generally 24V, because the LED voltage (2.7-3.3V) and other parameters determine that 12V is not suitable for high luminous efficacy light strips. A light strip with higher luminous efficacy will produce more lumens of light than a regular light strip, on the condition that the two light strips consume the same amount of power energy.

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In addition, you can slightly cover the flash with a sheet of white paper. This will act as a diffuser. When you do everything written above, you will be able to avoid the appearance of flare on your model's face, lead the light in the photo in the best possible way, and make it softer and smoother.

4. 24V LED strip lights use 24V power supplies and controllers. For medium to large installation, the total power of the LED strips is generally large. With the overall power of the LED light strips being the same, the power ratings of the 24V power supply and the LED controller are relatively larger compared to 12V, so the number of power supplies and controllers required is less for 24V version, which makes the 24V LED strips more economical than 12V.

Note that when I say "light behind," I don't mean that the photographer, subject, reflector, and main light source must be on the same line. Rays can also fall at an angle, but the primary condition for backlit portrait photography is the position of your subject between you and the light.

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Luminous flux refers to the amount of light emitted per unit time, expressed in lumens. The greater the luminous flux emitted by the light source per unit of electricity, the higher the efficiency with which the light source converts electrical energy into light energy, i.e., the higher the luminous efficacy. Luminous efficacy, expressed by the following formula: luminous efficacy = luminous flux / power.

Backlightingphotography

Indoor backlit photography is often used to convey the tenderness of the image. And this is understandable because even if you light up the girl’s hair a little from behind, it will shine and seem more magnificent. By the way, remember that when using a backlight, it is imperative to ensure that the primary light source is not in the frame. If this happens, unaesthetic highlights will be present in the picture. Unless you intend to use them as some creative technique, they will be wholly unnecessary and unattractive in the frame.

To shoot backlighting portraits in natural light, the best time is the golden hour: early morning or sunset. It is during these time intervals that sunlight falls at a slight angle, and therefore the light will be gentle and will not dazzle.

Front lightingexamples

It is this mode that is the easiest to work with backlighting images. All details, such as blades of grass, leaves, and flowers, will look magical if they are illuminated from behind when shooting. A backlight can be created artificially if there is no suitable natural light. This is where an external flash comes in handy. It only needs to be placed behind the subject and controlled by the camera.

Another exciting idea is shooting in the fog against sunlight. With this shooting, the mist will seem to be illuminated from the inside.

If the model has long hair and there is strong wind when shooting, then you need to choose the position in which the wind will blow in the face. In this case, sunlight should illuminate the girl from behind or slightly from the side.

The backlighting technique is a great way to emphasize the shape of a model or object. Using lighting from behind the thing, you can create stunning expressive photos.

Of course, you should not think about a bright background if you shoot with a backlight. Defects will appear on the photo, you will get an overexposed and blurry background, and sometimes details may not be visible. But in some cases, this phenomenon is an absolute norm. These are the specifics of shots using backlight.

The setting sun can be a great source of backlight and a grand color scheme for shooting. The sun's light at sunset is not as bright as, for example, at noon. Therefore, such light can be neutralized with even the weakest flash power. It is this technique when shooting that can perfectly highlight the details and objects that are in the foreground of the picture.

Have questions on how to wire LED strip lights? How to connect LED strip lights to power supplies? Don't worry, we got you covered. See the great article: All-inclusive Guide of LED Strip Light Instllation.

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Unaesthetic color spots may also appear in the pictures. They come in the event that too bright light falls directly into the camera lens. The solution to the problem is to move the sun out of the frame or correct the direction of the artificial light. I also recommend using a hood that prevents flare.

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The industry once had been controversial about the competition between LEDs and traditional light sources, and the question of who was ups and downs in the market. DOE also showed interest in this topic by having had comparison of ordinary light bulbs, fluorescent lamps and MR16 LED bulbs. Under current technical conditions, LED's high efficacy means higher luminous efficacy than conventional light sources. As for the CRI, its value is set specifically for various specific occasions.

As you can see, there are a lot of opportunities to use this technique to take truly gorgeous pictures. I hope here you've found all the info you'd like to know about backlighting photography. So I wish you inexhaustible inspiration and say Goodbye for now. See you (write you) in the following articles!

1. For longer run, larger outputs, especially for large scale installations, the 24V LED strips are the better long LED light strips, significantly better than the 12V version. The current of 24V LED strip is half that of 12V, so the 24V line loss and hence the voltage drop is less. This is why the continuous operation length of the 24V LED strip is longer than 12V, usually the length doubles under 24V version. This offers convenience to the long run installation. Whether it is the LED light strip, the controller, or the power supply, the installation work is less.

In October 2016, DOE supported and promoted, in its documentation for solid state lighting research and development, a new method of measuring color rendering ability, IES TM-30 (IES stands for Illuminating Engineering Society). It measures much more than the average color fidelity that CRI does, thus the quantification of color rendering ability is more closely in line with human judgment. Unlike the CRI obtained by sampling eight pastel colors, the TM-30 uses 99 color samples with various tones, saturations, and brightness.

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Fill light example

2. The higher the luminous efficacy, the stronger the ability of a lighting product to convert electrical energy into light energy. That is, the energy-saving of the lighting product is greater when the same brightness is produced. The luminous flux of the lighting is greater under the same power, the greater the relative brightness of the luminaire. But it does not mean that the brighter the luminaire, the higher the luminous efficacy of the luminaire, because on the condition that the luminous flux is the same, the luminous efficacy is inversely proportional to the rated power of the luminaire.

24V LED strip lights have many advantages that make them very popular. Compared to 12V LED strip, 24V are better to make long LED light strips. They are better for longer run installation, need less feed points due to the requirement for LED wires is less demanding, can be used for high efficacy lighting, and require less power supplies and controllers. We discuss the knowledge about 24V LED strips in this article. It helps users make wise decision when buying 24V LED light strips. 5-Year Warranty. UL Listed.

1. Yes, assume that two LED strip lights have the same color rendering index, the 24V LED strip with higher luminous efficacy is better.

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5-Year Warranty We know that your projects need high quality LED strip lights, which are what we are good at. We have been dedicated to developing and making quality LED strips for over ten years. Many types are available to serve the needs of contractors and end users. Our LED strip lights are UL listed and come with a 5-year warranty.