Question 1

What does MRC Nano coating actually do on a UV filter?

Accepted Answer

MRC stands for Multi-Resistant Coating — multiple layers that reduce reflections and protect the glass surface. The Nano part adds a nanoscale top layer that makes the surface hydrophobic and oleophobic, meaning water beads off and fingerprints don't stick. In practice, you spend less time cleaning and get fewer smear-related flare issues in the field.

Question 2

Does a UV filter affect image sharpness or colour?

Accepted Answer

A quality filter like this B+W MRC Nano is designed to be optically neutral — it shouldn't introduce visible colour cast or reduce sharpness when the glass is clean. Cheap uncoated filters are where you tend to see ghosting or mild colour shifts; the MRC Nano coating specifically addresses reflections that cause those problems.

Question 3

Is a 72mm UV filter compatible with my lens?

Accepted Answer

Only if your lens has a 72mm front filter thread — check the inside of your lens cap or the front barrel of the lens for a ø72 marking. Common 72mm lenses include several mid-range zooms and telephoto primes. A 72mm filter will not fit a 67mm or 77mm lens without a step-up ring.

Question 4

Is buying a used B+W filter worth it?

Accepted Answer

Filters are one of the safest used buys in photography. There are no moving parts, no electronics and no sensor degradation. At Camera-tweedehands.nl, every filter is individually inspected for glass condition and optical clarity. Every item carries a minimum 12 months warranty. A second-hand B+W MRC Nano Master in good condition gives you the same optical performance as new, at a more accessible price.

Question 5

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

Accepted Answer

Technically yes, but stacking filters on a 72mm lens increases the risk of vignetting, especially at wide focal lengths. Rather than stacking, consider using filters individually as needed. If you do want to stack, make sure the second filter has a slim-profile ring.

Question 6

How do I clean an MRC Nano coated filter?

Accepted Answer

The Nano coating makes this straightforward — a soft blower for loose dust, then a microfibre cloth with a small amount of lens cleaning fluid for smudges. Avoid paper tissues or rough fabrics. Because the surface is hydrophobic, you'll often find that water spots don't even dry as marks — a light wipe is usually all it takes.

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B+W UV-filter MRC Nano Master 72

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About the B+W UV-filter MRC Nano Master 72

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