Rollei Astroklar 105mm Light Pollution Round Filter - Clear Night

In this review of the Rollei Astroklar 105mm round filter the bottom line is simple: this is a targeted tool for photographers and amateur astronomers who regularly shoot night scenes in or near cities and need to cut through artificial skyglow. The reviewer found the filter most valuable for improving contrast and clarity without introducing color casts, owing chiefly to its neutral behaviour in the infrared range and a high-quality optical glass construction. If your goal is clearer night-sky and urban night photography, this product deserves consideration.

Key Features

• Light pollution reduction: The filter reduces unwanted glow from artificial street and building lights to restore contrast in night and astrophotography images.
• Optical glass construction: Manufactured from high-quality optical glass to preserve overall image sharpness and minimize aberrations.
• Double-sided Nano coating: A water repellent Nano coating on both faces helps repel water, oil and dirt and keeps the surface easier to clean in the field.
• Reflection control: The coating prevents reflections for cleaner long-exposure captures where stray light would otherwise cause flare.
• Infrared neutrality: Neutral behaviour within the infrared range helps avoid unintended color shifts in mixed-light night scenes.
• Complete package: The box contains one Astroklar filter and an information manual so users can get started immediately.

Who It's For

The filter is best for landscape, architectural and amateur astrophotographers who shoot from urban or suburban locations and need an easy accessory to reduce skyglow and lift contrast without complex post-processing. It is also suited for telescope users who want to improve visual or imaged star contrast when complete dark-sky access is impractical.

Photographers who already work only from pristine dark-sky sites or those needing variable or tunable spectral suppression may want to look at bespoke narrowband solutions; this Rollei filter is a general-purpose light pollution reducer rather than a specialized narrowband astronomical filter.

Pros & Cons

Pros

• Effectively reduces urban light pollution and restores contrast in night photos.
• High-quality optical glass preserves sharpness compared with cheaper plastics.
• Double-sided water repellent Nano coating repels water, oil and dirt and reduces reflections.
• Neutral infrared behaviour avoids color shifts in mixed lighting conditions.

Cons

• As a general light-pollution filter it does not replace specialized narrowband filters for scientific astrophotography.
• Round screw or format size must match existing lens or holder systems, otherwise an adapter is required.

Specifications

Product	Astroklar Light Pollution Round Filter
Diameter	105 mm
Material	High-quality optical glass
Coating	Double-sided water repellent Nano coating
Behaviour in IR	Neutral within the infrared range
Box contents	1x Astroklar filter, 1x information manual

Our Verdict

The Rollei Astroklar 105mm filter is a practical, well made accessory for photographers and amateur astronomers shooting in light-polluted areas; it improves contrast and reduces skyglow while preserving color neutrality and sharpness. For anyone who needs a straightforward way to tame urban night light without complex setups or heavy post-processing, it offers good value as a durable, coated optical filter.

Frequently Asked Questions

Will this filter change my night color balance?
The filter is designed to be neutral within the infrared range and should not introduce significant color shifts in typical night photography.

What is included in the box?
The package contains one Astroklar 105mm round filter and an information manual.

Is this suitable for serious astrophotography?
It improves contrast and reduces light pollution for visual and imaging work in urban areas but does not replace specialized narrowband or scientific filters used for deep-sky imaging.