Urth 46mm Magnetic Circular Polariser Plus+

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The details

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Stock In stock at Bass & Bligh
Dealer Bass & Bligh is an authorised UK Urth dealer
In the box Magnetic CPL filter, Magnetic adapter ring

At a glance: The Urth 46mm Magnetic Circular Polariser Plus+ clicks onto a supplied adapter ring to cut glare and reflections on lenses with a 46mm thread.

About this accessory

The Urth 46mm Magnetic Circular Polariser Plus+ is a CPL that attaches magnetically. It comes with a magnetic adapter ring for the lens thread, and uses German SCHOTT B270 glass with a CoraNano 20-layer coating on both sides. Urth states light transmission of 44.91% and reflectance of 0.56%.

Because the filter clicks on and off, you can fit it for a glare-heavy scene and take it off without unscrewing anything. The ring stays on the lens. Against a threaded polariser it is faster to swap, though it needs the adapter ring.

Build & handling

Filter type Circular polariser (CPL), magnetic
Tier Plus+
Filter thread (adapter ring) 46mm
Glass German SCHOTT B270
Coating CoraNano 20-layer dual-side nano-coating
Light transmission 44.91%
Reflectance 0.56%
Warranty Lifetime

Works with

  • Lenses with a 46mm filter thread (via the supplied adapter ring)

Best for

Best for travel, street and landscape photographers using a lens with a 46mm thread who like to swap filters quickly, and for video shooters who need to cut reflections on water, glass or windscreens at short notice.

Frequently asked questions

Is this the right filter for a 46mm lens thread?

It suits lenses with a 46mm filter thread, regardless of brand. Check the ø figure marked on the front of your lens or on its cap. A lens marked ø46 takes this filter directly, and the lens manual lists the thread size too.

Does the magnetic polariser include an adapter ring?

Yes. A magnetic adapter ring is included in the box. It screws onto your lens thread, and the polariser then attaches magnetically.

How much light does it block?

Urth states light transmission of 44.91%, so the filter absorbs a little over half the light. Expect to compensate with shutter speed, aperture or ISO.

Can I use it with a magnetic UV filter?

Not with the adapter ring on top of Urth's threaded Magnetic UV filter, as the magnets will repel. Use the ring directly on the lens thread.

Why buy from Bass & Bligh

Bought from a real shop, not a warehouse.

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