Have you ever filmed a video only to realize upon playback that the audio quality sucks? It’s happened to me more times than I care to admit. Although the Sony A7C is not lacking in terms of its built-in microphone, it’s also not the best, particularly when used in outdoor environments.
That’s why when shooting videos outside, I prefer using a boom microphone. Keep reading to learn more about the pros and cons of using a boom microphone with the Sony A7C.
What Are Boom Microphones?
Boom microphones, also known as shotgun microphones, are highly directional recording devices used to capture audio from a specific direction while minimizing unwanted background noise. They are mounted on a long, slender pole or boom arm and have a narrow recording angle that allows them to isolate subjects from ambient noise. Boom mics are commonly used in film and video production, as well as other professional audio recording applications.
What Are the Advantages of Boom Microphones?
Non-obstructive
One of the primary advantages of boom microphones is their ability to capture high-quality audio without obstructing the view of the subject being recorded. This is particularly useful in settings like press conferences, where a sea of microphones can sometimes obscure the speaker’s face. By using a boom mic, journalists can hear the speaker without any problem. Similarly, boom mics are utilized in film and television production to capture clear audio without being seen.
Less Handling Noise
Handheld microphones are often prone to handling noises and interferences caused by the holder’s movements, which can compromise the quality of the sound recording to the point where it’s unusable.
Boom microphones don’t suffer from the same problem. Boom microphones are less sensitive to the holder’s movements, resulting in audio recordings free from unwanted noise and distortion.
Flexibility
Another big advantage of using a boom microphone is its ability to hone in on a specific sound source. Unlike fixed microphones, boom microphones allow for greater flexibility in unpredictable terrain. It can be moved and adjusted to capture audio from a specific location, making it the go-to choice for professionals in the film, television, and music industries.
Reach
Boom mics are known for their reach. By using a boom pole or a boom stand, the microphone can be positioned at a greater distance from the sound source, allowing the operator to capture audio that would otherwise be impossible to record. In film production, boom microphones accurately capture dialogue during scenes where the actors move around or when the camera is too far away to use a traditional microphone.
What Are the Disadvantages of Boom Microphones?
Requires a Dedicated Operator
The boom mic operator must have a good understanding of the technical aspects of audio recording, as well as a keen eye for detail and the ability to follow a moving sound source. They must be able to move the boom with precision and keep the external microphone at a consistent distance from the sound source.
The boom operator must be adept at collaborating with the sound mixer or recordist to guarantee accurate audio levels and correctly capture the intended sound. This requires good communication skills and the ability to take direction quickly and efficiently.
Reflections
Shotgun microphones’ highly directional pickup pattern makes them susceptible to capturing unwanted sound reflections from nearby surfaces. While this pattern allows them to capture sound from a specific direction, it can also lead to compromised audio quality due to the added echo or reverb effect.
Cost
Boom microphones can be more expensive than other microphones, particularly if they are high quality and have advanced features. Using a boom microphone also requires additional equipment, such as a shock mount or boom pole, which can add to the overall cost.
Boom Mic vs. Lavalier Mics
Both shotgun and lavalier microphones can capture high-quality audio when used correctly. Lavalier microphones, in particular, are ideal for capturing audio directly from the subject, as they can be clipped onto clothing. Wired lavalier mics can be easily plugged into a 3.5mm jack and recorded directly to the video file, while wireless lavalier mics require a transmitter that can be connected to a 3.5mm jack or a separate mixer for post-production syncing.
While lavalier microphones are suitable for a wide range of applications, the form factor of shotgun microphones makes them more versatile. Shotgun microphones can also produce a more natural sound.
You Can Also Read: 5 Best Mics for Sony A7C in 2023
FAQs About Boom Microphone With Sony A7C
Why Are Boom Mics Fluffy?
Boom microphones often have a furry cover, commonly referred to as a “windscreen,” which may appear fluffy. This soft cover helps break up the wind as it hits the microphone and reduces unwanted noise.
How Do I Use My Boom Mic With My Sony A7C Camera?
To use your boom mic with your camera, you will need to connect the microphone to an audio recorder or mixer, and then connect the recorder or mixer to your camera. Here are the basic steps:
1. Attach your boom mic to a boom pole.
2. Position the boom pole with the mic close to your subject.
3. Connect the boom mic to an audio recorder or mixer using an XLR cable.
4. Adjust the microphone’s levels on the recorder or mixer to get the desired audio levels.
5. Connect the audio recorder or mixer to your camera using an appropriate cable.
6. Turn on your camera and check the audio levels to make sure you are getting good sound.
Are Boom Mics Dynamic or Condenser?
Boom mics can be either condenser or dynamic microphones. The type of microphone used in a boom setup depends on the specific audio needs of the production and the personal preferences of the sound engineer or operator. Condenser mics are more sensitive and can capture a wider frequency range, making them ideal for capturing subtle nuances in sound. Dynamic microphones, on the other hand, are more rugged and less sensitive to loud noises, making them ideal for capturing dialogue in noisy environments.
