The luminescence requirements of tungsten wires in video lights mainly include the following aspects:
- Color temperature and color reproduction
Stable color temperature: The color temperature of the light produced by tungsten wire lamps is usually around 3200K. This color temperature is often regarded as a warm color in videography, which can create a warm and nostalgic atmosphere. In order to obtain a stable color effect, the color temperature of tungsten wire lamps should remain stable and should not change significantly with voltage fluctuations or extended use time.
Good color reproduction: The light of tungsten wire lamps should have good color reproduction, that is, it can truly reflect the color of the subject. This requires that the light spectrum distribution of tungsten wire lamps is as close to natural light as possible to reduce color distortion.
- Brightness and light intensity distribution
Moderate brightness: The brightness of tungsten lamps should be moderate, which can meet the lighting needs during video recording, but not too bright to cause overexposure of the picture. The adjustment range of brightness should be wide enough to adapt to different scenes and shooting needs.
Uniform light intensity distribution: The light intensity distribution of tungsten lamps should be as uniform as possible to avoid obvious light spots or dark areas. Uniform light intensity distribution helps to obtain a more natural lighting effect and reduce the difficulty of post-processing.
- Focusing and diffusing performance
Focusing performance: For scenes that need to highlight the details of the subject or create specific light and shadow effects, tungsten lamps should have good focusing performance. This is usually achieved by adjusting the distance between the light source and the lens, using accessories such as shading plates or focusing tubes.
Differentiation performance: For scenes that require uniform illumination of a large area, tungsten lamps should have good diffusing performance. This can be achieved by using bulb types such as frosted bulbs or milky white bulbs, or by adding accessories such as diffusers in front of the bulbs.
- Durability and stability
Long life: Tungsten wire lamps should have a long service life to reduce the frequency and cost of replacing bulbs. Long-life tungsten wire lamps usually use high-quality tungsten wire materials and optimized manufacturing processes.
Good stability: Tungsten wire lamps should remain stable during operation, and there should be no obvious flickering or brightness fluctuations. This requires a reasonable circuit design that can provide stable current and voltage output.
- Safety and environmental protection
High safety: Tungsten wire lamps should have high safety, including good heat dissipation, explosion-proof performance, and electrical safety performance. This helps reduce safety hazards such as fire and electric shock.
Good environmental protection: Tungsten wire lamps should use environmentally friendly materials and manufacturing processes as much as possible to reduce the impact on the environment. For example, recyclable bulb shell materials and energy-saving circuit designs can be selected.
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