We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Aluminium adapter ring with retractable blades, 37 to 49mm variable thread for 52mm filters

H&Y

H&Y RevoRing 37-49mm Variable Adapter for 52mm Filters

SKU CH-Z8PC-9H36G

Adapts 37-49mm lens threads to accept 52mm screw-in filters with retractable blade technology

  • Adapts to lenses from 37mm to 49mm
  • Uses a single 52mm filter on multiple lenses
  • Retracting blades prevent light leaks completely
  • Architectural-grade aluminium stays light and resists corrosion
  • Replaces several step-up rings in one ring

Variable 37-49mm filter adapter

The H&Y RevoRing attaches a single 52mm screw-in filter to any lens with a front thread between 37mm and 49mm. Retractable blade technology locks onto the lens threads and overlapping edges prevent light leaks. Architectural-grade aluminium construction keeps the ring light and resistant to corrosion.

Replaces multiple step-up rings

One adapter covers the full 37-49mm range so you no longer need a collection of individual step-up rings. This reduces bag clutter and weight while letting you move the same filter between different lenses instantly. The 52mm front thread accepts standard circular polarisers, ND filters or protective glass.

Consistent seal under changing conditions

Overlapping threaded ends maintain a light-tight join even when the blades expand or contract to fit different lens diameters. The anodised aluminium finish resists moisture and grit during extended outdoor sessions. The mechanism contains no electronic contacts, so autofocus and exposure communication pass through unaffected.

How it compares

Measured against everything we stock in Lens Filters & Polarizers, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 86% of the 1,281 comparable items (median $48.99).

Specifications

No published specifications for this item yet.

Questions about this item

How does the variable 37-49mm range stay light-tight when a 52mm filter is mounted?

The patent-pending retractable blades overlap at every setting, so no gap appears between the adapter and the lens barrel.

Will the aluminium body heat up during long video takes and affect focus or filter alignment?

Architectural-grade aluminium dissipates ambient heat quickly and the anodised finish prevents thermal expansion from shifting the blade positions.

Do my lenses need a specific thread pitch or coating for the adapter to grip securely?

Any lens with a standard front filter thread between 37mm and 49mm works; no special coating or pitch is required.

More in Lens Filters & Polarizers

Similar items