Rollei Astroklar Light Pollution 77mm Round Filter - Clear Night

In this review the Rollei Astroklar Light Pollution Round Filter is assessed as a targeted tool for photographers who shoot cityscapes, architecture and astrophotography from light-polluted locations. The single biggest reason to buy is its ability to reduce the haze and orange cast from artificial lighting while retaining fine detail, which produces clearer, higher-contrast night images. The review focuses on real-world performance, handling and how the filter integrates with manual white balance to correct the slight cooler tone the coating introduces.

Key Features

• Light pollution reduction: Effectively reduces unwanted glow from streetlights and other artificial sources so stars and building details appear with improved contrast.
• Optical glass construction: Manufactured from high-quality optical glass to preserve image sharpness across the frame.
• Nano double-sided coating: Double-sided water repellent Nano coating helps repel water, oil and dirt and keeps the glass easier to clean in the field.
• Reflection prevention: Coating design prevents reflections during long exposures and reduces stray light artifacts.
• Infrared neutrality: Neutral behaviour within the infrared range maintains consistency for night imaging that captures near-IR detail.
• Included accessories: Supplied with an information manual and single filter box for convenient storage and reference.

Who It's For

The Astroklar filter is best for amateur and enthusiast photographers who frequently shoot at night in urban or suburban environments and want to reduce the colour cast and veiling luminance from street and building lights. It suits landscape and architecture shooters who use long exposures and need a simple, screw-on solution to improve contrast without software-heavy corrections.

Professionals who require exact colour matching in a studio environment or those working only under pristine dark-sky conditions may prefer other, more specialised tools; likewise, photographers who want dramatic colour shifts rather than neutral correction should look elsewhere.

Pros & Cons

Pros

• Reduces light pollution haze, yielding clearer night-time skies and crisper city scenes.
• High-quality optical glass and double-sided Nano coating maintain image sharpness and reduce flares.
• Water, oil and dirt repellency makes cleaning and outdoor use easier and faster.
• Neutral infrared behaviour preserves near-IR detail for technical night work.

Cons

• The coating produces a slightly cooler tone, so manual white balance adjustment (around +700K to +1,500K) is typically required.
• Single filter in the box; users who want multiple diameters must purchase additional sizes separately.

Specifications

Our Verdict

The Rollei Astroklar 77mm is a practical, good-value filter for photographers shooting in light-polluted areas-especially urban nightscape and architecture shooters who want improved contrast and fewer colour casts without heavy post-processing. Its optical glass and durable coatings make it a reliable field accessory, provided the user adjusts white balance slightly to compensate for the cooler tone.

Frequently Asked Questions

Will this filter affect colour balance?
Yes; the special coating gives a slightly cooler tone, so using manual white balance (about +700K to +1,500K) is recommended.

Is the filter protected against water and dirt?
Yes; the double-sided Nano coating repels water, oil and dirt and makes cleaning easier.

Can I use it for astrophotography?
Yes; it reduces light pollution and has neutral infrared behaviour, making it suitable for astrophotography in urban areas.