Urth 39mm UV and Circular Polarising (CPL) Lens Filter Kit

The UV filter primarily protects your lens and reduces UV light for sharper images, while the CPL filter is used to manage reflections and enhance color saturation by polarizing light.

Yes, you can stack both filters. The UV filter is typically mounted first, closest to the lens, followed by the CPL filter.

Look for the filter thread size designation on your lens, usually marked with a 'ø' symbol followed by a number (e.g., ø39mm). If your lens specifies 39mm, it should fit.

While filters can slightly affect light transmission, modern camera systems are generally able to compensate. The CPL filter might require a slightly longer exposure or adjustment of exposure compensation in some manual shooting scenarios.

Clean the filters as needed, especially if you notice a reduction in image quality due to smudges or dust. Regular cleaning with a microfiber cloth and lens cleaner is recommended.

The 'Plus+' designation typically indicates enhanced coatings or improved optical performance compared to standard filter versions.

Ensure the filter is securely attached. If the issue persists, it may be due to the filter's thickness combined with a wide-angle lens; try removing one filter or using a lens with a larger thread size if possible.

Check for any debris or damage on the lens threads or the filter threads. Ensure you are aligning the threads correctly and not cross-threading. Try gently backing the filter out and re-attempting.

Ensure the filter is clean. Smudges or dust can degrade image quality. Also, verify that the filter is properly seated and not causing any optical misalignment.