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
Matte black alloy adapter ring marked 86-77mm for 100mm square filter holder

Urth

Urth 86-77mm Adapter Ring for 100mm Square Filter Holder

SKU CH-CBST-BGEKZ

Connects 77mm lenses to 100mm square filter holders with 86mm outer threads and true threading

  • Connects 77mm lenses to 100mm filter holders
  • 86mm outer thread fits compatible holder systems
  • Durable lightweight alloy withstands regular use
  • Matte black anti-reflective finish reduces unwanted reflections
  • True threads ensure secure stable mounting

What it is and who it is for

The Urth 86-77mm Adapter Ring connects a 77mm lens thread to a 100mm square filter holder system. It is built for photographers who already own a 100mm holder and want to use it on lenses with a smaller 77mm front thread. The lightweight alloy construction adds minimal bulk to a camera bag. It suits landscape, portrait and general outdoor shooters who rely on square filters.

Thermals noise and power draw

This passive metal ring has no electronics, no moving parts and no power requirement. It produces no heat, no noise and draws zero current in any shooting situation. The matte black anti-reflective finish helps control stray light without affecting exposure. There are no thermal limits or duty-cycle concerns to consider.

The specification that decides fit

The ring converts an 86mm outer thread down to a 77mm inner thread so the holder mounts securely on the lens. True threads ensure a precise, wobble-free connection every time. Compatibility is limited to 100mm square filter holders that accept an 86mm male thread. Lenses with any other front-thread size cannot use this adapter.

Highlights

  • Connects 77mm lenses to 100mm filter holders
  • 86mm outer thread fits compatible holder systems
  • Durable lightweight alloy withstands regular use
  • Matte black anti-reflective finish reduces unwanted reflections
  • True threads ensure secure stable mounting

Specifications

No published specifications for this item yet.

Questions about this item

How do I attach the 86-77mm adapter ring to my 77mm lens and 100mm square filter holder?

Screw the 77mm side onto the lens front thread, then slide the 86mm side into the 100mm holder until it locks; the step often missed is aligning the matte black anti-reflective finish correctly to prevent light leaks.

What maintenance will the alloy adapter ring need over time?

Wipe the true threads and matte finish with a microfiber cloth after sandy or salty shoots; no lubrication is required, but check thread engagement periodically for grit that could bind the 77mm or 86mm interfaces.

What limit appears first when using this ring continuously in bright conditions?

The matte black anti-reflective coating minimises flare, so the practical limit is vignetting on ultra-wide lenses rather than reflection artefacts during sustained use.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.