Why Do Leds Flicker On Camera?

LEDs or Light Emitting Diodes are one of the most energy-efficient lighting sources available in the market. They are used in a wide range of applications, from lighting up homes and businesses to car headlights and traffic signals. However, one common issue that many people face while using LEDs is that they tend to flicker on camera.

There are several reasons why LEDs flicker on camera, including:

1. The frequency of the LED – LEDs operate on a specific frequency known as the Pulse Width Modulation (PWM). This frequency can create a flickering effect when captured on a camera.

2. The camera’s shutter speed – When the shutter speed of a camera is not in sync with the LED’s frequency, it can result in flickering. This is more common in low-light conditions when the camera’s shutter speed is slower.

3. The quality of the LED – Cheap or low-quality LEDs often have a low PWM frequency, which can cause them to flicker on camera.

4. Interference from other electronic devices – Other electronic devices that emit electromagnetic waves can interfere with the LED’s frequency, causing it to flicker.

To prevent LEDs from flickering on camera, one can take the following steps:

  • Use high-quality LEDs with a higher PWM frequency.
  • Adjust the camera’s settings to match the LED’s frequency.
  • Use an external flash or lighting source that does not interfere with the LED’s frequency.
  • Avoid using multiple electronic devices in close proximity to the LEDs.

In conclusion, while LEDs are an excellent lighting option, they can flicker on camera due to several factors, including the frequency of the LED, the camera’s shutter speed, and interference from other electronic devices. However, by using high-quality LEDs and adjusting the camera’s settings, one can easily prevent this issue.

Commonly Asked Questions


1. Why do LEDs flicker on camera?

LEDs flicker on camera because they have a pulse-width modulation (PWM) system that regulates their brightness. This system can cause flickering, especially when the camera has a high shutter speed.

2. Can LED flicker be fixed?

Yes, LED flicker can be fixed by using an LED light with a higher PWM frequency or by adjusting the camera’s shutter speed. Additionally, using a camera with a global shutter can reduce the flicker effect.

3. Does LED flicker only occur on camera?

No, LED flicker can also be seen by the naked eye, although it may be less noticeable. Flickering can occur when the LED light is not powered correctly or when the light source is not compatible with the power source. It is important to use high-quality LED lights and power sources to avoid flickering.

4. Is LED flicker harmful to the eyes?

LED flicker is not harmful to the eyes, but it can cause discomfort, headaches, and eye strain. If you experience these symptoms, it is recommended to take a break from the light source or adjust the lighting conditions. Additionally, using LED lights with a high CRI (color rendering index) can reduce eye strain and fatigue.

Leave a Comment