77mm X4 UV Filter for Camera Lenses - Ultra-Slim UV Protection

Our review of the 77mm X4 UV Filter finds it aimed squarely at photographers who want protective glass that does not compromise image quality. The single biggest reason to buy is its combination of SCHOTT Superwhite B270 optical glass and a 16-layer MRC16 coating which together preserve contrast and increase light transmission to 99.4%, so photographers get protection without a detectable loss in clarity. Build quality, smooth threading, and the ultra-slim frame make it a practical everyday filter for landscape and general shooting.

Key Features

• SCHOTT Superwhite B270 glass: delivers very high optical clarity and neutral color rendering so images remain crisp and true to tone.
• MRC16 multi-resistant coating: increases light transmission to 99.4% and adds a hard protective layer that reduces reflections and preserves contrast.
• Nanotec repellant layer: causes water and dirt to bead so cleaning is faster and smears are minimized in the field.
• Ultra-slim traction frame: the 3.2mm double-threaded Traction Frame prevents vignetting on wide-angle full-frame lenses while still accepting caps and additional filters.
• Wide compatibility: this 77mm thread size fits any lens with a 77mm thread, making it an easy addition to many kits.
• 25 Year Ironclad Guarantee: serial-number tracking offers long-term support and peace of mind for investment in a quality filter.

Who It's For

This filter is best for enthusiast and professional photographers who value optical performance and durable coatings: landscape shooters using wide-angle full-frame lenses will benefit from the ultra-slim frame that reduces vignetting, while travel and everyday shooters will appreciate the nanotec and MRC16 coatings for easier cleaning and reduced flare.

Casual users who only need the cheapest physical protection or who are unsure of their lens thread size should look elsewhere; this is a premium glass filter and delivers benefits that matter most to image-critical work rather than purely cosmetic protection.

Pros & Cons

Pros

• Outstanding clarity and contrast from SCHOTT Superwhite B270 glass and the 16-layer MRC16 coating.
• Effective dirt and water repellency thanks to the nanotec coating, making maintenance quicker in the field.
• Ultra-slim 3.2mm double-threaded traction frame prevents vignetting on wide-angle setups while accepting caps and stacked filters.

Cons

• Higher-end construction and German optical glass mean a premium price compared with basic UV protectors.
• Requires correct 77mm thread match; it will not fit lenses of other thread sizes.

Specifications

Filter type	UV protection
Glass	SCHOTT Superwhite B270 optical glass
Coatings	MRC16 multi-resistant plus Nanotec
Frame	Ultra-slim 3.2mm double-threaded Traction Frame
Thread size	77mm
Light transmission	99.4% (specified)
Warranty	25 Year Ironclad Guarantee with laser-engraved serial

Our Verdict

The 77mm X4 UV Filter is an excellent choice for photographers who need real optical quality and durable coatings rather than a basic protective plate. Its SCHOTT glass, 16-layer MRC coating and nanotec surface treatment keep images clear and make field maintenance easier, while the ultra-slim frame avoids vignetting on wide-angle setups. For image-conscious users the long guarantee and build quality make it good value over time.

Frequently Asked Questions

Will this fit my lens?
It fits lenses with a 77mm thread; check the thread size printed under your lens cap or on the barrel to confirm fit.

Does the filter affect image quality?
When installed the SCHOTT B270 glass and MRC16 coating preserve contrast and transmission, so no noticeable loss in image quality is expected.

How easy is it to clean?
The Nanotec coating causes liquids and dirt to bead, making cleaning faster and reducing smears compared with uncoated glass.