Changes in the Filming Environment and The Spread of LED Displays

With advancements in digital technology, virtual production using LED displays is becoming the new standard in video production.

【Virtual Production Studio Market Growth Forecast】

Forecast Period：2024-2032
Projected CAGR：15%

【Advantages of Utilizing LED Displays】

• Real-time compositing: No green background is required, and the background is instantly reflected during shooting.
• Natural lighting: Directly reflects the light from the LED displays for realistic lighting.
• Flexible shooting: No need for on-location shoots; filming is unaffected by weather or time of the day.
• Cost reduction: High-quality images are achieved with lower set production costs.

However, with the spread of LED display filming, new challenges have arisen.

Emerging Issues: Moire, False Colors, and Aliasing

The interaction between the pixel structure of LED displays and the camera sensor increases the likelihood of image artifacts such as moire, false colors, and aliasing.
This problem is especially acute when using high-resolution cameras.

Moire Effect

The Role of Optical Low-pass Filters

Optical low-pass filters play a key role in addressing image quality issues in modern video production.
They reduce visual artifacts such as moire, aliasing, and false colors, improving overall clarity.
This effect is particularly significant in shooting environments where LED displays are used, and it can substantially reduce the need for post-production correction work.

Issue	Effect of OLPF
Moire	Reduces interference with the LED displays pixel grid and prevents false colors and stripes
Aliasing	Improves video smoothness by reducing jaggies and false colors
False Colors	Prevents interference with the RGB pixels of LED displays, preventing color shift
Post-Production Burden	Reduces noise during shooting, reducing the need for video correction
Cinematic Expression	Reduces excessive sharpness characteristic of digital to achieve a cinematic quality

Proven Reliability and QualityーMade in Japan

【Why Choose NDK Optical Low-pass Filter?】

NDK manufactures optical low-pass filters in-house in Japan, offering high-quality products.
Our unique crystal growth technology and precision processing, developed over many years, ensure stable optical characteristics and high durability, which are trusted by various video equipment manufacturers.

• High purity synthetic quartz crystals: Achieving stable optical properties with in-house grown, high-purity quartz materials.
• Precision machining: High-quality finish achieved through precise polishing techniques.
• A variety of coating options: UV/IR cut, anti-reflection, water-repellent coatings, etc., offering the best specifications for each environment and application.
• Long-term stability: Durable frame design ensures high performance over time.

NDK's optical low-pass filters adapt to the latest shooting environments and help improve the quality of video production utilizing LED displays.

With the spread of virtual production, optical technology to prevent moire and other aliasing is essential for high-quality video production.
Optical low-pass filters enhance video quality during shooting and significantly reduce the burden of editing work.
NDK supports the continued advancement of the video industry by adapting to evolving imaging technologies and providing optimal optical low-pass filter solutions.