Choosing the Right UV Filter Size for Your Lens
By Lens-Aid | Published: 2026-10-26
Category: Buying Guides
Learn how to match a UV filter to your lens thread size, why 67mm and 46mm are common, and when to skip the filter entirely.
Quick Answer
To choose the right UV filter size, check the diameter marked on your lens barrel (often with a Ø symbol) and match it exactly. Common sizes like 67mm and 46mm are popular, but the correct size is always the one printed on your specific lens.
Why the Filter Size Must Match Exactly
The filter size is determined by the thread diameter on the front of your lens, not by the lens's focal length or aperture. Using a filter with a different size will either not screw on (too small) or will not fit securely (too large).
A correctly sized filter sits flush and protects the front element without vignetting or interfering with the lens cap. Always verify the size by checking the lens barrel or the lens's manual before purchasing.
Common Sizes and When They Appear
67mm and 46mm are common filter thread sizes, but many other diameters exist (e.g., 49mm, 52mm, 58mm, 72mm, 77mm). The size is not related to the lens's quality or price; it's simply a physical dimension.
If you own multiple lenses with different thread sizes, you can either buy a filter for each or use step-up rings (but note that step-up rings can add bulk and may not allow the lens cap to fit).
Trade-Offs of Using a UV Filter
A UV filter adds a protective layer in front of your lens, which is useful in dusty or wet conditions. However, any extra glass can slightly reduce contrast or increase flare, especially with cheaper filters.
High-quality filters, like those made with Schott B270 glass, aim to minimize optical degradation. If you're shooting in controlled environments, you might prefer to leave the lens unprotected for maximum image quality.
Decision Rules: How to Choose the Right UV Filter Size
- Find Your Lens Thread Size: Look for the diameter marked on the lens barrel (often with a Ø symbol) or in the lens manual. This number is the filter size you need. Write down the number—it's your filter size.
- Match the Size Exactly: Choose a filter with the same diameter as your lens thread. Do not guess or use a different size, as it won't fit properly. Double-check the filter's size before buying.
- Consider Your Use Case: If you shoot in dusty, sandy, or wet environments, a protective UV filter is worthwhile. For studio or controlled settings, you may skip it to avoid any optical impact. Decide based on your shooting conditions.
- Check Filter Quality: Opt for filters with multi-coating or high-quality glass, like Schott B270, to minimize flare and maintain sharpness. Invest in a quality filter for better image results.
Product Facts
- UV-Filter 67 mm – Schutzfilter für Kameraobjektive: The 67mm UV filter is made with high-quality Schott B270 glass and is designed to protect the front lens from scratches, dust, fingerprints, and splashes. This filter suits lenses with a 67mm thread, offering durable protection while aiming to preserve image clarity.
UV-Filter 67 mm – Schutzfilter für Kameraobjektive - UV-Filter 46 mm – Schutzfilter für Kameraobjektive: The 46mm UV filter uses high-quality optical glass and also filters ultraviolet light, in addition to protecting the lens. For compact lenses with a 46mm thread, this filter adds protection and can reduce UV haze, which may slightly improve outdoor shots.
UV-Filter 46 mm – Schutzfilter für Kameraobjektive
Fit Guidance
Best for
- Photographers who want to protect their lens in outdoor or harsh conditions.
- Those who already know their lens thread size and want a direct replacement or spare filter.
Not for
- Photographers who never expose their lens to dust or moisture and prioritize minimal glass in front of the lens.
