
( Brand: Red ), ( Manufacturer Part Number: 65-1102757 ), ( Part Type: Filter ), ( Filter Effects: Infrared ), ( Country Of Origin: Germany ), ( Filter Size: 40.5 Mm )
The **65-1102757 40.5mm 092 Infrared (IR) Cut Filter (695nm)** is a precision-engineered optical accessory meticulously designed for photographers, astrophotographers, and scientific imaging enthusiasts seeking to refine their capture of infrared light while maintaining optimal clarity and color fidelity. Crafted from high-quality optical glass, this filter operates at a precise 695nm wavelength, effectively blocking unwanted infrared radiation that can otherwise distort images by introducing false color casts or reducing contrast in both terrestrial and celestial photography. The 092 designation indicates its specialized role in suppressing infrared light beyond the visible spectrum, making it an indispensable tool for capturing authentic, high-contrast images in scenarios where infrared interference is prevalent such as in landscape photography under harsh lighting conditions or when photographing through atmospheric haze. With a robust 40.5mm diameter, this filter is compatible with a wide range of lenses, from standard DSLRs to telephoto and astrophotography setups, ensuring versatility across various applications. Its precision-milled edges and anti-reflective coating minimize flare and ghosting, preserving the integrity of your lens s optical performance while delivering a cleaner, more accurate representation of the scene. Whether used in conjunction with specialized IR-sensitive cameras or modified DSLRs, this filter empowers photographers to harness the full potential of infrared imaging, unlocking a unique visual perspective that reveals hidden details and textures often obscured by conventional photography. Ideal for both amateur and professional use, the 65-1102757 092 IR filter is a testament to the marriage of optical engineering and creative expression, offering a reliable solution for those who seek to explore the unseen spectrum of light.
The product you re referring to is the **Hoya R-CA695 Infrared Cut-Off Filter (40.5mm, 65mm thread size, part number 1102757)**. This filter is designed to block infrared (IR) light while allowing visible light to pass through, which is particularly useful for astrophotography, scientific imaging, and certain types of photography where IR interference is undesirable.
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### **Pros of buying a Hoya R-CA695 Infrared Filter**
1. **High-Quality IR Blocking**
The R-CA695 is a specialized infrared cut-off filter that effectively blocks IR wavelengths beyond approximately 700nm, ensuring cleaner visible-light images. This is critical for astrophotography (e.g., lunar/solar imaging) or when using cameras sensitive to IR.
2. **Optical Clarity and Minimal Distortion**
Hoya is known for producing high-quality optical glass with low dispersion and minimal chromatic aberration. The R-CA695 maintains sharp, distortion-free images, which is essential for precision imaging tasks.
3. **Durable and Weather-Sealed Construction**
The filter is built with a robust metal frame (65mm thread size) and is often sealed against dust and moisture, making it suitable for outdoor use, including telescope or DSLR lens attachments.
4. **Compatibility with a Wide Range of Equipment**
The 40.5mm diameter fits most DSLR and mirrorless cameras, while the 65mm thread allows it to be attached to adapters for larger telescopes or lenses. This versatility makes it a practical choice for both photography and astronomy.
5. **Long-Term Stability**
Hoya filters are known for their durability and resistance to scratching or degradation over time, provided they are handled carefully.
6. **Cost-Effective for Specialized Use**
While not the cheapest filter on the market, the R-CA695 offers a balance between performance and price, especially for hobbyists or professionals who require IR blocking without investing in more expensive alternatives.
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### **Cons of buying a Hoya R-CA695 Infrared Filter**
1. **Limited Use Case for General Photography**
For most casual photographers, an IR cut-off filter is unnecessary unless they are working with IR-sensitive cameras or equipment. Visible-light photography typically doesn t benefit from this filter.
2. **Potential for Light Loss**
Like all filters, the R-CA695 introduces a slight reduction in light transmission (typically around 1-2 stops), which may require longer exposures in low-light conditions like astrophotography.
3. **Thread Size Limitations**
The 65mm thread size may not fit all telescopes or lenses without an adapter. While adapters are often available, they add to the cost and complexity of setup.
4. **Not a Panchromatic or Specialized IR Filter**
If you re looking for a filter that enhances IR sensitivity (e.g., for IR photography), this is not the right choice. The R-CA695 is strictly for blocking IR, not capturing it.
5. **Potential for Reflection or Ghosting**
Some users report minor internal reflections or ghosting, though this is rare with high-quality filters like the Hoya R-CA695. Proper alignment and anti-reflective coatings help mitigate this.
6. **Maintenance Requirements**
Like any optical filter, the R-CA695 requires careful handling to avoid scratches or dust accumulation. It should be cleaned with precision tools and stored properly when not in use.
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### **Conclusion**
The **Hoya R-CA695 Infrared Cut-Off Filter** is a well-engineered, high-performance tool for users who specifically need to block infrared light particularly in astrophotography, scientific imaging, or when working with IR-sensitive cameras. Its optical quality, durability, and versatility make it a strong choice for niche applications where IR interference is a concern.
However, for general photography or casual use, the benefits may not justify the cost or complexity. If you re certain that IR blocking is essential for your work, this filter is a reliable and cost-effective option. If you re unsure, consider testing a lower-cost alternative or consulting with experts in your specific field (e.g., astrophotography forums) to confirm its necessity.
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### **Recommendation**
**Buy the Hoya R-CA695 if:**- You are an astrophotographer shooting the Moon, Sun, or deep-sky objects and need to minimize IR contamination.
- You use a camera or sensor that is sensitive to IR and require a clean visible-light spectrum.
- You prioritize optical clarity, durability, and compatibility with your existing equipment.
**Avoid or reconsider if:**- You are a general photographer who doesn t need IR blocking.
- You re working with IR-sensitive equipment but require a filter that enhances IR rather than blocks it.
- You re on a tight budget and can find a lower-cost alternative that meets your needs.
For most users, pairing this filter with a trusted adapter (if needed) and proper cleaning tools will ensure the best results. Always verify compatibility with your specific camera or telescope setup before purchasing.
The B W 40.5mm Basic 092 InfraRed Filter is a high-quality camera filter designed for infraRed photography. Made in Germany by the reputable brand B W, this filter ensures reliable performance and excellent effects for enhancing your photography experience. With a dark Red filter color and size of 40.5mm, it is ideal for capturing infraRed images with precision.