Question 1

What does MRC coating on a B+W UV filter actually do?

Accepted Answer

MRC stands for Multi-Resistant Coating — it's a multi-layer treatment that makes the filter surface harder, more scratch-resistant, and easier to clean. Water and oil bead up and wipe away without smearing, which is especially useful when shooting outdoors or in dusty conditions.

Question 2

Does a UV filter affect image quality or sharpness?

Accepted Answer

A quality filter like this B+W MRC Basic adds only one extra glass surface in front of your lens. On the vast majority of shots you won't see any difference in sharpness. In very high-contrast backlit scenes, a cheaper uncoated filter can cause flare; the MRC coating minimises that risk.

Question 3

Which lenses use a 77mm filter thread?

Accepted Answer

77mm is one of the most common filter sizes for mid-range and professional lenses. Popular examples include the Nikon AF-S NIKKOR 24-70mm f/2.8G, the Canon EF 24-105mm f/4L, the Sigma 17-50mm f/2.8 OS, and many Sony FE and Tamron zoom lenses. Always check your specific lens cap or barrel — the filter thread diameter is usually printed inside the lens cap or engraved on the barrel.

Question 4

Is a UV filter still useful for digital cameras?

Accepted Answer

Digitals sensors already filter UV light internally, so a UV filter no longer affects exposure or colour the way it did on film. Its main job today is lens protection — guarding the front element against dust, moisture, fingerprints and accidental scratches.

Question 5

Is buying a used B+W filter worth it?

Accepted Answer

Absolutely. Filters don't have moving parts, electronics or wear mechanisms — the main thing to check is the glass surface (no deep scratches) and the filter ring (threads intact, no dents). Every used filter on Camera-tweedehands.nl is individually inspected and comes with a minimum 12 months warranty, so you get the same optical quality as new B+W glass at a lower price.

Question 6

Can I stack this UV filter with a polariser or ND filter?

Accepted Answer

You can stack filters on a 77mm thread, but it's generally not recommended to combine a UV filter with another filter unless you specifically need both. Stacking adds thickness, which can cause vignetting on ultra-wide lenses, and each extra glass surface is a potential source of reflections. For most shooting situations, choose one filter and leave it at that.

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B+W UV-filter MRC Basic 77

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About the B+W UV-filter MRC Basic 77

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