KANI R640 Nebula Photography Filter 150x150mm
The KANI R640 150x150mm Nebula Photography Filter is a specialized square filter designed for astrophotography, especially for capturing nebulae and deep-sky objects with enhanced contrast.
This filter was developed under the supervision of astrophotographer Akio Nakanishi in response to requests from astrophotography enthusiasts.
Although similar filters from major manufacturers were discontinued due to limited market demand, many astrophotographers still consider this type of filter highly valuable for nebula photography.
The R640 filter helps improve the visibility of H-alpha emission regions while reducing unwanted light pollution, making it useful for photographing nebulae from both dark-sky locations and areas affected by artificial light.
Key Features
- Specialized square filter for nebula and astrophotography
- 150x150mm size for large square filter holder systems
- Enhances nebula contrast and H-alpha emission visibility
- Helps reduce the influence of light pollution
- Developed under the supervision of astrophotographer Akio Nakanishi
- Suitable for astro-modified cameras and manufacturer astro models
- Useful for long-exposure deep-sky photography
- Ideal for emission nebulae, night sky, and creative astrophotography
Product Description
Nebula photography requires the ability to capture very faint light emitted from deep-sky objects.
The KANI R640 filter is designed to support this type of photography by emphasizing wavelengths useful for nebula imaging while reducing unnecessary light contamination.
By controlling unwanted visible light and suppressing the effects of light pollution, the R640 filter can help create cleaner images with improved contrast around nebula structures.
This is especially helpful when shooting in locations where city lights or artificial illumination affect the night sky.
The 150x150mm square format is suitable for photographers using square filter holder systems, allowing the filter to be used with a wide range of lenses depending on the holder and adapter configuration.
Exposure Multiplier
The exposure multiplier of the R640 filter depends on the camera type, sensor sensitivity, and shooting environment.
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For manufacturer astro models and astro-modified cameras with high sensitivity to H-alpha wavelengths, the exposure multiplier is approximately 5x to 6x.
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In areas with strong light pollution, exposure compensation may exceed 10x because the filter provides a strong light pollution reduction effect.
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For standard non-modified DSLR cameras, the exposure multiplier is generally more than 10x because sensitivity to wavelengths longer than 640nm is limited.
Recommended Applications
- Nebula photography
- Deep-sky astrophotography
- H-alpha enhanced imaging
- Night sky photography
- Long-exposure astrophotography
- Astrophotography in light-polluted areas
- Creative astronomical imaging
Specifications
| Product Name |
KANI R640 Nebula Photography Filter |
| Size |
150x150mm |
| Filter Type |
Nebula / Astrophotography Filter |
| Main Purpose |
Nebula photography, H-alpha enhanced imaging, light pollution reduction |
| Recommended Camera |
Astro-modified cameras / Manufacturer astro models recommended |
Important Note
Exposure settings will vary depending on the camera model, modification type, lens, sky conditions, and level of light pollution.
For best results, use with cameras that have high sensitivity to H-alpha wavelengths, such as astro-modified cameras or manufacturer astro models.
