What Is an Infrared or Radio Frequency Trigger?

What Is an Infrared Trigger?

An infrared trigger is a device used in photography to remotely activate the shutter of a camera using infrared technology. It consists of a transmitter and a receiver that work together to wirelessly communicate and control the camera. The transmitter emits a beam of infrared light, which is then detected by the receiver attached to the camera. When the receiver detects the infrared signal, it triggers the camera to take a photo.

Infrared triggers are commonly used in various photographic scenarios, including wildlife photography, astrophotography, and capturing remote subjects. They offer photographers the convenience of remotely controlling their cameras from a distance, giving them greater flexibility and capability in capturing the perfect shot.

These triggers are typically lightweight, portable, and easy to use. They come in different designs, including handheld remotes, wireless transmitters that can be mounted on the camera, or even smartphone apps that can turn your mobile device into a remote control for your camera.

Moreover, infrared triggers often have additional features such as autofocus activation, interval shooting, and bulb mode support, allowing photographers to further expand their creative possibilities. Some models even offer multi-channel options, allowing photographers to control multiple cameras simultaneously or avoid interference in crowded environments.

How Does an Infrared Trigger Work?

An infrared trigger operates by utilizing infrared light to communicate between the transmitter and the receiver. When the photographer presses the button on the infrared trigger, the transmitter emits a beam of infrared light that carries the signal to the receiver. The receiver, which is attached to the camera, detects the infrared signal and triggers the camera to take a photo.

The infrared signal operates on a specific wavelength or frequency, allowing the receiver to distinguish between ambient light and the signal from the trigger. This ensures that the camera is only triggered when the desired infrared signal is detected.

The range of an infrared trigger can vary depending on the model and environment. Typically, the range can span from a few meters to several dozen meters. It’s important to note that the effectiveness of the trigger may be affected by factors such as obstacles, interference from other infrared sources, and the strength of the infrared signal.

Additionally, some infrared triggers offer different modes of operation. For example, single-shot mode triggers the camera once with each press of the button on the transmitter. Continuous mode triggers the camera to take a series of shots in rapid succession as long as the button is held down. Bulb mode allows the photographer to control the camera’s shutter speed by leaving the button pressed for the desired length of time.

Overall, infrared triggers provide a wireless solution for remotely triggering a camera, giving photographers increased flexibility and convenience in capturing images without physically interacting with the camera itself.

Advantages of Infrared Triggers

Infrared triggers offer several advantages for photographers in various shooting scenarios. Here are some of the key benefits:

Wireless Control: One of the main advantages of infrared triggers is the ability to wirelessly control the camera. This means photographers can remotely trigger their cameras from a distance, allowing them to capture shots without physically being next to the camera.
Flexibility and Convenience: With the use of infrared triggers, photographers have greater flexibility in composition and timing. They can position themselves in the frame or set up their cameras in unique and challenging locations while still being able to remotely activate the shutter.
Reduced Camera Shake: By using an infrared trigger, photographers can eliminate the need to physically press the camera’s shutter button, which can introduce camera shake. This is particularly important in situations where even the slightest camera movement can result in blurred images.
Stealth and Wildlife Photography: Infrared triggers are invaluable for wildlife photographers who want to capture animals in their natural habitats without alarming or disturbing them. By operating the camera remotely using an infrared trigger, photographers can maintain a safe distance and minimize their presence.
Long Exposure Photography: Infrared triggers are also ideal for long exposure photography, especially when using bulb mode. The ability to lock the camera’s shutter open for an extended period without the need to physically hold down the button allows for precise and controlled shots of star trails, light painting, and other creative techniques.
Multi-Camera Control: Many infrared triggers offer multi-channel options, allowing photographers to control multiple cameras simultaneously. This is particularly useful for event photographers or studio setups where multiple angles or perspectives need to be captured simultaneously.

Infrared triggers provide photographers with enhanced creative possibilities and freedom to capture stunning images in various shooting situations. Their wireless control, flexibility, and convenience make them an essential tool in any photographer’s kit.

Limitations of Infrared Triggers

While infrared triggers offer numerous advantages, it is important to consider their limitations before deciding to use them in your photography workflow. Here are some common limitations associated with infrared triggers:

Line-of-Sight Requirement: Infrared triggers work by transmitting a beam of light from the transmitter to the receiver. This means that there must be a clear line-of-sight between the two devices for the trigger to function properly. Obstacles such as walls, trees, or even strong sunlight can interfere with the signal and diminish the trigger’s effectiveness.
Shorter Range: Compared to other wireless triggering options, such as radio frequency triggers, infrared triggers typically have a shorter range. Depending on the model and environmental conditions, the range can vary from a few meters to several dozen meters. This limited range may restrict the distance from which you can trigger your camera.
Interference from Other Sources: Infrared signals can be susceptible to interference from other infrared devices in the environment, such as remote controls or lighting systems. In crowded areas where multiple photographers are using infrared triggers, cross-interference can occur, causing misfires or triggering the wrong camera.
Outdoor Limitations: In bright sunlight, the infrared signal can be less effective due to the strength of the ambient light. This can result in reduced range and accuracy of the trigger. Additionally, adverse weather conditions such as heavy rain or fog can interfere with the infrared signal and limit its functionality.
Limited Functionality: While infrared triggers offer remote shutter control, they may lack advanced features found in other trigger types, such as high-speed sync or TTL metering control. If you require these advanced functionalities in your photography, you may need to explore alternative trigger options.

Despite these limitations, infrared triggers remain a popular choice among photographers for their convenience and versatility. By understanding these limitations, you can make an informed decision on whether infrared triggers are suitable for your specific photography needs.

What Is a Radio Frequency Trigger?

A radio frequency (RF) trigger is a device used in photography to wirelessly activate the shutter of a camera by utilizing radio waves. Unlike infrared triggers that rely on line-of-sight communication, RF triggers operate on a radio frequency that can penetrate obstacles and work over longer distances.

A radio frequency trigger typically consists of a transmitter and a receiver. The transmitter emits radio waves, which are then detected by the receiver attached to the camera. When the receiver receives the radio wave signal, it triggers the camera to take a photo.

RF triggers come in various designs and form factors, including handheld remotes, wireless transmitters that can be attached to the camera’s hot shoe, or even smartphone apps that connect to a receiver unit. They offer photographers the convenience of remotely controlling their cameras without the need for a direct line-of-sight connection.

These triggers operate on specific radio frequencies, usually within the range of 2.4GHz or 433MHz. Using different channels and groups, photographers can control multiple cameras simultaneously or avoid interference in crowded environments where other RF devices may be present.

Radio frequency triggers are widely used in a range of photographic applications, including landscape photography, sports photography, and studio setups. They provide photographers with the freedom to capture shots from various angles and distances, enhancing their creative possibilities.

How Does a Radio Frequency Trigger Work?

A radio frequency (RF) trigger works by utilizing radio waves to wirelessly transmit signals between the transmitter and the receiver. Here’s how it operates:

1. Transmitter: The photographer initiates the trigger by pressing the button on the transmitter. The transmitter converts this button press into a radio signal and emits it in the form of radio waves.

2. Radio Wave Transmission: The radio waves travel through the air, carrying the signal from the transmitter to the receiver. Unlike infrared triggers, RF triggers do not require a direct line-of-sight connection. The radio waves can penetrate obstacles, such as walls or other objects, allowing for greater flexibility in positioning the transmitter and receiver.

3. Receiver: The receiver, attached to the camera or connected via a compatible receiver unit, detects the radio waves emitted by the transmitter. It interprets the signal and triggers the camera to take a photo. The camera reacts as if the shutter button was physically pressed.

4. Channel and Group Selection: Many RF triggers offer multiple channels and groups, allowing photographers to select different configurations to avoid interference or control multiple camera systems simultaneously. By selecting a specific channel and group, the transmitter and receiver synchronize and communicate on the same frequency.

5. Range and Performance: The range of an RF trigger can vary depending on factors such as the model, antenna design, and environmental conditions. RF triggers typically have a longer range compared to infrared triggers, allowing photographers to trigger their cameras from a greater distance.

Overall, radio frequency triggers offer photographers a reliable and versatile solution for wireless camera control. Their ability to transmit signals through obstacles and operate over longer distances makes them suitable for a wide range of photography scenarios.

Advantages of Radio Frequency Triggers

Radio frequency (RF) triggers provide photographers with several advantages over other triggering options. Here are some key benefits of using RF triggers:

Extended Range: RF triggers offer a significantly extended range compared to infrared triggers. They can operate reliably over longer distances, allowing photographers to trigger their cameras from a greater distance, whether it’s for capturing wildlife, sports events, or remote subjects.
Obstacle Penetration: Unlike infrared triggers, RF triggers can transmit through obstacles such as walls, trees, or other physical barriers. This enables photographers to position the transmitter and receiver in different locations, maintaining a steady connection without requiring a direct line-of-sight connection.
Multiple Device Control: RF triggers often provide the ability to control multiple cameras or off-camera flashes simultaneously. This is particularly useful for event photographers or studio setups where synchronized shooting or lighting is required. Different channels or groups can be assigned to each camera or flash, ensuring precise control over each device.
Flexibility and Versatility: RF triggers can offer more advanced features and functionalities compared to other triggers. They may include options for high-speed sync, support for TTL metering, and even remote power control of off-camera flashes. These features provide photographers with greater flexibility and creative control over their lighting setups.
Reliability and Stability: RF triggers are known for their reliable and stable performance. The radio frequency transmission is less prone to interference from other devices, resulting in consistent triggering and reducing misfires. By using the proper channel and group settings, photographers can operate in crowded environments without signal interruptions.
Compatibility: RF triggers are designed to be compatible with a wide range of camera models and brands. Whether you’re using a Canon, Nikon, Sony, or other camera systems, there are RF triggers available that can seamlessly integrate with your equipment.

With their extended range, obstacle-penetrating capabilities, and advanced features, radio frequency triggers provide photographers with enhanced control and flexibility in their photography. Whether you’re capturing fast-paced action or setting up complex lighting setups, RF triggers are an excellent option to consider.

Limitations of Radio Frequency Triggers

While radio frequency (RF) triggers offer numerous advantages, it’s important to be aware of their limitations before incorporating them into your photography workflow. Here are some common limitations associated with RF triggers:

Power Consumption: RF triggers require power to operate, typically in the form of batteries. Continuous use can drain the batteries, so it’s essential to have spare batteries on hand to ensure uninterrupted shooting sessions.
Higher Cost: RF triggers tend to be more expensive than other triggering options, such as infrared triggers. This cost is often attributed to their advanced features, broader compatibility, and increased reliability. It’s important to consider your budget and specific photography needs when deciding on the right trigger for you.
Complexity and Setup: RF triggers can be more complex to set up and configure compared to simpler trigger options. They may require syncing multiple devices, selecting the appropriate channel and group settings, and ensuring compatibility with your camera and off-camera flashes. Familiarizing yourself with the user manual and taking the time to properly set up the triggers is necessary for optimal performance.
Interference and Channel Selection: While RF triggers are generally more immune to interference than infrared triggers, they can still be affected by other RF devices in the vicinity. Ensuring the proper channel and group selection is essential to avoid interference and maintain reliable triggering.
Complexity with Multiple Devices: While RF triggers offer the advantage of controlling multiple devices simultaneously, managing and coordinating multiple cameras or off-camera flashes can be challenging. It requires careful organization and coordination to ensure all devices work in sync and are triggered consistently.
Environmental Factors: Weather conditions, such as heavy rain or extreme cold, can impact the performance of RF triggers. These triggers may be susceptible to signal degradation or range reduction in adverse weather conditions, affecting their overall reliability.

By understanding these limitations, photographers can make informed decisions when considering the use of RF triggers. Despite these limitations, RF triggers remain a popular choice for photographers who require extended range, advanced features, and precise control over their camera and lighting setups.

Comparing Infrared and Radio Frequency Triggers

When it comes to wireless triggering options in photography, two common choices are infrared triggers and radio frequency (RF) triggers. Let’s compare these two options to understand their differences and benefits:

Line-of-Sight: Infrared triggers require a clear line-of-sight between the transmitter and receiver, while RF triggers can transmit through obstacles and operate over longer distances, making them more versatile in various shooting scenarios.
Range: RF triggers generally offer a longer range compared to infrared triggers. This allows photographers to trigger their cameras from a greater distance, providing more flexibility and creative freedom.
Interference: Infrared triggers may be susceptible to interference from other infrared devices or strong sunlight. RF triggers, on the other hand, are designed to be less prone to interference, making them more reliable in crowded environments or areas with multiple photographers using wireless triggers.
Complexity: Infrared triggers are typically easier to set up and use compared to RF triggers, as they often have simpler configurations and require minimal adjustments. RF triggers, on the other hand, offer more advanced features and capabilities, but this complexity may require more time and effort to set up properly.
Compatibility: Infrared triggers are generally compatible with a wide range of camera models, while RF triggers offer broad compatibility with different camera brands and models. It’s essential to ensure compatibility with your specific camera before purchasing a trigger.
Cost: In general, infrared triggers are more affordable compared to RF triggers. RF triggers tend to have a higher price point due to their extended range capabilities, advanced features, and broader compatibility.
Use Cases: Infrared triggers are often used for situations where a direct line-of-sight connection is viable, such as close-range photography or controlling a single camera. RF triggers excel in scenarios where longer distances, obstacle penetration, or multi-device control are required, making them suitable for wildlife photography, sports events, or complex lighting setups.

Ultimately, the choice between infrared triggers and RF triggers depends on your specific photography needs. If line-of-sight communication and simplicity are sufficient, infrared triggers can be a cost-effective option. However, if you require extended range, obstacle penetration, multi-device control, and advanced features, RF triggers are a more versatile and capable choice.

Factors to Consider When Choosing an Infrared or Radio Frequency Trigger

When deciding between an infrared trigger and a radio frequency (RF) trigger for your photography needs, several factors should be taken into consideration:

Line-of-Sight vs. Obstacle Penetration: Evaluate the shooting scenarios you often encounter. If you primarily shoot in situations where a direct line-of-sight connection is feasible, such as close-range or controlled environments, an infrared trigger may suffice. However, if you require longer distances or obstacle penetration, an RF trigger would be more appropriate.
Range and Coverage: Consider the range requirements for your photography. If you frequently need to trigger your camera from a significant distance, such as capturing wildlife or distant subjects, an RF trigger with an extended range may be crucial. However, if you primarily shoot in close proximity to your camera, the shorter range of an infrared trigger may still be sufficient.
Interference: Evaluate the shooting environments you typically work in. If you often shoot in crowded areas with other photographers using wireless triggers, an RF trigger may be more resistant to potential interference. Conversely, if such scenarios are infrequent, an infrared trigger should perform adequately.
Functionality and Advanced Features: Consider the specific features and functionality you require. RF triggers typically offer more advanced features, such as high-speed sync, TTL metering control, and multi-device control. If these features align with your shooting style and requirements, an RF trigger may be the better choice.
Compatibility: Ensure that the trigger you choose is compatible with your camera model. While most infrared triggers are compatible with a wide range of cameras, RF triggers offer broader compatibility with different camera brands and models. Confirm the compatibility of both the trigger and your camera before making a purchase.
Budget: Consider the cost implications of your decision. Infrared triggers tend to be more affordable compared to RF triggers. However, if the features and capabilities of an RF trigger align closely with your needs, it may be worth investing in a higher-priced option.

By carefully considering these factors, you can make an informed decision when choosing between an infrared trigger and an RF trigger. Assess your shooting requirements, evaluate the shooting scenarios you encounter, and prioritize the features and functionalities that best align with your photography style. This will help you select the trigger that meets your specific needs and enhances your photography experience.

Popular Brands and Models of Infrared and Radio Frequency Triggers

There are several popular brands and models of both infrared triggers and radio frequency (RF) triggers available in the market. Here are some well-known options to consider:

Infrared Triggers:

Canon RC-6: Specifically designed for Canon cameras, the RC-6 is a compact and affordable infrared trigger. It offers basic functionality such as shutter release and a two-second delay timer.
Nikon ML-L3: Designed for Nikon cameras, the ML-L3 is a widely used infrared trigger. It supports basic functions like shutter release and has a range of up to 16 feet (4.88 meters).
Sony RMT-DSLR2: Sony’s RMT-DSLR2 is an infrared remote commander that offers compatibility with a range of Sony cameras. It provides basic control over shutter release and features a convenient bulb mode for long exposures.
Phottix Aion: The Phottix Aion is a versatile infrared triggering system compatible with various camera brands. It offers features such as multi-channel triggering, interval shooting, and long exposure control, making it suitable for a range of photography styles.
Pixel RC-201: The Pixel RC-201 is a budget-friendly infrared trigger with compatibility across popular camera brands. It provides reliable remote control, including single shot and continuous shooting modes.

Radio Frequency Triggers:

PocketWizard PlusX: The PocketWizard PlusX is a highly regarded RF trigger known for its reliability and range. It features simple operation, long battery life, and compatibility with many camera brands.
Godox XPro: The Godox XPro is a feature-packed RF trigger compatible with various camera models. It offers high-speed sync, TTL metering, and multi-group control, making it a versatile option for advanced lighting setups.
Profoto Air Remote TTL: The Profoto Air Remote TTL is a premium RF trigger renowned for its compatibility and advanced features. It provides TTL metering, remote power control, and high-speed sync capabilities, making it ideal for professional photographers working with Profoto lighting systems.
Cactus V6 II: The Cactus V6 II is a popular and affordable RF trigger with cross-brand compatibility. It enables remote power control, high-speed sync, and multi-flash control, offering flexibility and functionality for creative lighting setups.
Yongnuo RF-603 II: The Yongnuo RF-603 II is a budget-friendly RF trigger known for its simplicity and reliability. It offers multi-channel triggering, remote shutter control, and basic flash triggering, making it a good entry-level option.

These are just a few examples of the popular brands and models available in the market. Remember to research and compare the specifications, features, compatibility, and customer reviews to find the best trigger that meets your specific requirements and budget.

Tips for Using Infrared and Radio Frequency Triggers

Here are some helpful tips for using infrared and radio frequency (RF) triggers in your photography:

1. Understand the Trigger Range:

Be aware of the effective range of your trigger system. Test it in different shooting scenarios to understand its limitations and reliability, especially when shooting at longer distances or in obstructed environments.

2. Check Battery Life:

Prior to a shoot, ensure that the batteries in both the transmitter and receiver are fully charged. Carry spare batteries to avoid sudden power failures that could disrupt your session.

3. Keep Line-of-Sight in Mind:

If using infrared triggers, make sure there is an unobstructed line-of-sight between the transmitter and receiver. For RF triggers, take advantage of their obstacle-penetrating capabilities, but keep in mind that some materials, such as metal or dense walls, can weaken the signal.

4. Test for Interference:

In environments with other photographers using wireless triggers, test your trigger beforehand to ensure it is not affected by interference. Adjusting channels or groups can help minimize interference issues.

5. Familiarize Yourself with Features:

Take the time to read the user manual and fully understand the features and functionalities of your trigger system. This will help you utilize its capabilities to their fullest extent.

6. Experiment with Advanced Functions:

If your trigger offers advanced features like high-speed sync or TTL metering, experiment with them to explore new creative possibilities. Take the time to understand how these functions work and how they can enhance your photography.

7. Carry a Remote Release Cable:

In case of any issues with your trigger, have a backup plan. A remote release cable that connects directly to your camera can serve as a reliable alternative, ensuring you don’t miss important shots.

8. Practice and Refine Your Technique:

Using triggers effectively requires practice and experimentation. Familiarize yourself with the trigger’s response time and behavior to anticipate the perfect moment and capture it with precision.

9. Consider Using a Tripod or Stabilization:

Since you won’t be physically holding the camera when using a trigger, it’s essential to stabilize it adequately. Consider using a tripod or other stabilization methods to minimize camera shake and ensure sharp images.

10. Protect and Store Your Triggers:

To prolong the lifespan of your triggers, handle them with care and protect them from moisture, extreme temperatures, and physical impacts. Invest in a suitable case or pouch to keep them safe during transport and storage.

By following these tips, you can maximize the effectiveness and efficiency of your infrared and RF triggers, enhancing your overall photography experience and capturing compelling images with ease.