NiSi Filter UHD UC UV L395 CT-1 for EF 400 & 800mm

NiSi Filter UHD UC UV L395 CT-1 for EF 400 & 800mm – Patented mount for lens-safe front protection

This NiSi UHD UC UV L395 CT-1 filter fits the front of Canon EF 400/2.8 IS and 800/5.6 IS lenses and protects the lens front with a patented installation design. The mount secures the filter without harming the lens, giving you a straightforward way to shield expensive optics from dust, moisture and light interference.

Key features and benefits

• Patented installation design – The filter attaches to the lens front in a way that prevents damage during installation and removal, protecting the lens surface while remaining secure in use.
• UV Cut coating – The filter includes a UV cut coating to reduce interference from ultraviolet light. This helps maintain image clarity when shooting in bright or high-UV conditions.
• High Definition glass – The optical glass is specified as high definition to ensure the filter does not affect focusing. You can keep your lens performance intact while the filter stays in place.
• Matt black paint on glass edge – The glass edge is finished with matt black paint to minimize stray light and reduce potential flare from light hitting the filter edges.
• Waterproof and oil-repellent – The filter surface repels water and oils, making it easier to wipe clean and maintain in the field.

Who should use this filter

This filter is intended for photographers and filmmakers who use Canon EF 400/2.8 IS or 800/5.6 IS lenses and want to protect the front element without compromising optical performance. It suits outdoor work where UV reduction, moisture resistance and stray-light control are important.

What to expect in everyday use

When mounted, the filter provides physical protection for the lens front and reduces ultraviolet interference. The waterproof and oil-repellent coating makes maintenance faster, while the matt-painted edges help reduce unwanted stray light. The design aims to keep focusing performance unchanged thanks to the use of high-definition glass.

FAQ

Question: Will this filter fit my Canon EF 400/2.8 IS or 800/5.6 IS lens?

Answer: Yes. The NiSi UHD UC UV L395 CT-1 is designed to fit on the front of Canon EF 400/2.8 IS and 800/5.6 IS lenses and protect the front element.

Question: Does the filter affect focusing or image sharpness?

Answer: The filter uses high-definition glass specifically to avoid affecting focusing. It is intended to maintain the optical performance of your lens while providing protection.

Question: How does the filter handle cleaning and outdoor conditions?

Answer: The filter features a waterproof and oil-repellent coating, which makes it easier to clean and helps it resist moisture and fingerprints during outdoor use.

Question: What is the benefit of the matt black paint on the glass edge?

Answer: The matt black paint on the glass edge reduces stray light and potential flare by preventing reflections from the filter edge, improving contrast in challenging lighting situations.

If you need further details or help confirming compatibility with your exact lens version, contact us and we will assist you.