1. Introduction
This manual provides comprehensive instructions for the NEEWER 52mm CPL (Circular Polarizing) Filter, Model FL-26. This filter is designed to reduce glare from non-metallic surfaces, enhance color saturation, and improve contrast in your photographs and videos taken with smartphones and compatible cameras. Please read this manual thoroughly before use to ensure optimal performance and longevity of your product.
2. Package Contents
Verify that all items listed below are included in your package:
- 1 x NEEWER 52mm CPL Filter
- 1 x Universal Phone Clip with 52mm Filter Adapter
- 1 x Protective Carrying Case
- 1 x Microfiber Cleaning Cloth

Image: Contents of the NEEWER 52mm CPL Filter kit, including the filter, phone clip, carrying case, and cleaning cloth.
3. Setup and Installation
Follow these steps to correctly attach the CPL filter to your smartphone or camera.
- Prepare the Phone Clip: Ensure the universal phone clip is clean and free of debris.
- Attach the Filter to the Clip: Screw the 52mm CPL filter onto the threaded adapter of the phone clip. Turn clockwise until it is securely fastened, but do not overtighten.
- Position the Clip on Your Device:
- For Smartphones: Open the phone clip and carefully position it over your phone's primary camera lens. Ensure the filter is centered over the lens and the clip does not obstruct the screen or other camera modules. The clip is designed to accommodate single, dual, and triple lens phone setups.
- For Cameras with 52mm Thread: If your camera lens has a 52mm filter thread, you can screw the CPL filter directly onto the lens without the phone clip.
- Secure the Clip: Release the clip gently to ensure it firmly grips your device without causing damage. Verify the filter is stable and aligned.

Image: The universal phone clip demonstrating its compatibility with various smartphone camera configurations (single, dual, triple lenses) and traditional DSLR cameras (with a 52mm adapter ring, sold separately).

Image: A hand holding a smartphone with the NEEWER CPL filter securely clipped over the camera lens, illustrating quick installation.
4. Operating Instructions
The CPL filter allows you to control reflections and enhance colors. Here’s how to use it effectively:
- Adjusting Polarization: Once the filter is attached, rotate the outer ring of the CPL filter. As you rotate, observe the live preview on your phone or camera screen. You will notice changes in reflections and color saturation.
- Reducing Glare and Reflections:
- Rotate the filter until reflections from water, glass, or other non-metallic surfaces are minimized or eliminated to your desired level.
- This is particularly useful for photographing landscapes with water, windows, or when shooting through glass.
- Enhancing Color and Contrast:
- Rotate the filter to deepen blue skies, make clouds stand out, and increase the vibrancy of foliage.
- The effect is most pronounced when shooting at a 90-degree angle to the sun.
- Optimal Use: Experiment with different rotation angles to achieve the desired photographic effect. The effect of polarization is not always visible at all angles or lighting conditions.

Image: A visual comparison demonstrating the effect of the CPL filter. The "Before" image shows reflections on water, while the "After" image shows significantly reduced reflections and deeper blue water and sky.

Image: An illustration of the CPL filter mounted on a smartphone, indicating its 360-degree rotation capability for adjusting the polarization angle. Key features like high light transmittance, aviation aluminum frame, nanocrystalline coating, and high-definition optical glass are highlighted.
5. Maintenance and Care
Proper care will extend the life and maintain the performance of your CPL filter.
- Cleaning the Filter: Use the provided microfiber cleaning cloth to gently wipe away dust, fingerprints, or smudges from the filter glass. For stubborn marks, a small amount of lens cleaning solution applied to the cloth (not directly to the filter) can be used.
- Storage: Always store the filter in its protective carrying case when not in use. This prevents scratches and protects it from dust and impacts.
- Handling: Avoid touching the glass surface of the filter directly with your fingers. Hold it by the metal frame.
- Avoid Extreme Conditions: Do not expose the filter to extreme temperatures, humidity, or corrosive chemicals.

Image: The NEEWER CPL filter and phone clip neatly stored within its compact, protective carrying case, illustrating its portability and safe storage. Dimensions of the filter and clip are also shown.
6. Troubleshooting
If you encounter any issues, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Vignetting (dark corners in photos) | Filter not perfectly centered; using a very wide-angle lens; filter frame too thick. | Ensure the filter is precisely centered over the phone's camera lens. If using an extremely wide-angle setting, some vignetting may be unavoidable. |
| Filter not staying securely on phone | Clip not properly aligned; phone case interfering. | Re-position the clip to ensure a firm grip. Remove bulky phone cases if they prevent proper attachment. |
| No noticeable polarization effect | Incorrect lighting conditions; filter not rotated. | Ensure you are shooting in conditions where polarization is effective (e.g., bright daylight, presence of reflections). Rotate the outer ring of the filter fully to observe the effect. |
| Image quality appears degraded | Dirty filter; scratched filter. | Clean the filter thoroughly with the provided microfiber cloth. If the filter is scratched, it may need replacement. |
7. Specifications
| Brand | NEEWER |
| Model Name | FL-26 |
| Filter Type | Circular Polarizer (CPL) |
| Filter Size | 52mm |
| Material | Optical Glass, Aluminum Alloy Frame |
| Coating Description | Nano Coating |
| Product Dimensions | 3.5"L x 1.1"W (approximate for filter with clip) |
| Item Weight | 0.09 kg |
| Compatibility | Most smartphones (iPhone, Samsung Galaxy, Android), digital camera lenses with 52mm filter thread. |
8. Warranty Information
The NEEWER 52mm CPL Filter (Model FL-26) comes with a 1-Year Manufacturer's Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage caused by misuse, accident, unauthorized modification, or improper maintenance. Please retain your proof of purchase for warranty claims.
9. Customer Support
For further assistance, technical support, or warranty inquiries, please contact NEEWER customer service through their official website or the retailer from whom you purchased the product. Please have your product model (FL-26) and proof of purchase ready when contacting support.
Official NEEWER Website: www.neewer.com
