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Eighteen black anodised aluminium step rings in a grid, sizes from 37 to 82 millimetres

K&F Concept

K&F Concept 18-Piece Step-Up/Down Ring Set 37-82mm

SKU CH-2F69-2NSEJ

An 18-piece aluminium adapter kit covering step-up and step-down rings from 37 mm to 82 mm for filters, hoods and converters

  • TypeFilters Set
  • Package Contents18 Pieces Filter Ring
  • Attach filters from 37 mm to 82 mm with 9 step-up rings
  • Mount smaller accessories on larger lenses using 9 step-down rings
  • Aviation-grade aluminium resists impact and twisting forces
  • Matte black finish prevents reflections and reduces chemical residue
  • Precision threads eliminate wobble and cross-threading during use

18-Piece Aluminium Stepping-Ring Kit

The K&F Concept set contains eighteen aluminium adapter rings that cover thread sizes from 37 mm to 82 mm. Nine step-up rings let you mount larger filters on smaller lenses, while nine step-down rings do the reverse. Each ring is machined from aviation-grade alloy with a matte black finish for a secure, wobble-free fit.

Photographers who own multiple filter-thread lenses

Shooters carrying lenses with different front threads can swap a single filter set across the whole range without buying duplicates. Videographers using matte boxes or hoods with non-matching threads also benefit. Photographers who only ever use one filter size, or who need filter threads outside the 37–82 mm span, will not need this kit.

Thread range 37 mm to 82 mm

The kit spans every common thread from 37 mm through 82 mm in the increments listed in the specifications. If your lenses and accessories all fall inside that range, the eighteen rings cover every combination. If any lens or filter uses a thread smaller than 37 mm or larger than 82 mm, the set cannot adapt it.

Highlights

  • Attach filters from 37 mm to 82 mm with 9 step-up rings
  • Mount smaller accessories on larger lenses using 9 step-down rings
  • Aviation-grade aluminium resists impact and twisting forces
  • Matte black finish prevents reflections and reduces chemical residue
  • Precision threads eliminate wobble and cross-threading during use

Specifications

BrandK&F Concept
SeriesStepping Rings Kit
TypeFilters Set
Package Contents18 Pieces Filter Ring

Questions about this item

Which thread sizes does the 18-piece set cover for stepping up?

The nine step-up rings span 37-49, 49-52, 52-55, 55-58, 58-62, 62-67, 67-72, 72-77 and 77-82 mm.

What does the 37-82 mm range mean when I mount a filter on my lens?

You can adapt any lens thread from 37 mm up to 82 mm to accept a larger filter or accessory by chaining the appropriate rings.

What threading standard do these rings use and what limits it in practice?

They use standard camera filter threads; the practical limit is the largest 82 mm outer thread and the smallest 37 mm inner thread.

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