Urth 55mm Magnetic Lens Filter Caps

Urth 55mm Magnetic Lens Filter Caps are a pair of magnetic covers for Urth's magnetic filter system. Their metal construction is intended to shield filters from dust and grime while stacking compactly, but they are only suitable for that magnetic system, not ordinary 55mm lenses by size alone.

At a glance

Magnetic caps are designed to stack over Urth Magnetic Lens Filters.
The listing describes two metal caps made from lightweight magnalium.
The caps cover filters against dust, fingerprints, dirt and grime.
No optical glass is used, so the caps are not intended to alter image quality or autofocus when fitted as covers.

Price

£20.30Save 30%

Reference price: ~~£29.00~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

The two-cap stack is designed to protect magnetic filters without adding bulky conventional covers.
Lightweight magnalium construction and a compact design suit camera-bag carry.
The covers have no optical glass, so they do not sit in the image path as a filter would.

Cons

Use is restricted to compatible Urth magnetic filters, which limits usefulness with standard threaded filters.

Technical specifications

12 specifications

Identity
Brand	Urth
Model	Tapas Magnéticas 55 mm

Display and video
Screen size	55 Millimetres

Camera optics
Focus type	Fixed Focus
Filter size	55 Millimeters
Compatible devices	55mm camera lenses

Materials and protection
Water resistance listed	Water Resistant
Lens type	Protector
Image stabilisation listed	no image stabilization
Country of origin	China

Pack details
Number of items	1
Manufacturer part number	UMCAP55

What to know before buying

Listing details to confirm

Compatibility is specifically stated for Urth's magnetic filter system. The listing also labels a cap accessory with a fixed-focus type, water resistance, stabilisation and screen-size fields, which are not clearly applicable to lens caps. Confirm the required fit and disregard those unusual accessory classifications when comparing specifications. The listing says two metal caps are supplied, while its item count is one.

Who is it for?

A good fit for

Photographers using Urth magnetic filters who want compact covers for storage and transport.
Camera-bag users prioritising light, stackable protection against everyday dirt and dust.

Less suited to

Owners of ordinary threaded filters or lenses without Urth's magnetic filter system.
Buyers seeking an optical filter or a universal 55mm lens cap.

Urth 55mm Magnetic Lens Filter Caps · photo 2 — Additional product photo 2

Customer reviews on Amazon

4 / 5 · 115 ratings

5 stars63%63%
4 stars11%11%
3 stars8%8%
2 stars7%7%
1 star11%11%

Customer feedback describes the caps as good quality, attractive and functional, but reports mixed experiences with magnetic hold and removal. Some find the magnet strong while others find it ineffective, and some say removing a cap is difficult. That matters for quick handling and secure transport. Value for money is also criticised. These impressions are relevant to a compact, magnetic filter-cover design but do not establish consistent performance for every set.

Positive themes

Customers describe the quality, design and functionality positively.

Negative themes

Some customers question the value for money.

Mixed feedback

Feedback is divided on magnetic strength, with some reporting a strong hold and others finding it ineffective.
Removal is not consistently easy, with some customers describing the cap as difficult to take off.

Frequently asked questions

Will these fit any 55mm lens?

Not necessarily. The listing says they are compatible with 55mm lenses equipped with Urth's magnetic filter system, and notes that they work only with magnetic filters.

How many caps are described?

A feature statement says the set contains two metal caps. The listing's item count is one, so treat that as a pack/item count rather than proof of a single cap.

Are these optical filters?

No. They are protective caps without optical glass, intended to cover magnetic filters rather than change an image.