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Black metal adapter ring with 55 mm thread and macro flash mount

SIGMA

SIGMA F30S17 55 mm macro flash adapter ring camera accessory

SKU CH-WEZV-SECRT

A 55 mm macro flash adapter ring for compatible Sigma lenses, model F30S17

  • Fits 55 mm filter threads for secure macro flash mounting
  • SIGMA F30S17 model ensures dedicated compatibility with SIGMA macro flash units
  • Adapter ring design enables close-up flash photography without vignetting
  • First listed by manufacturer in November 2018
  • Durable construction supports repeated field use for macro work

Macro Flash Adapter Ring for 55 mm Threads

The SIGMA F30S17 adapter ring connects a compatible macro flash unit to lenses with a 55 mm filter thread. It is designed for photographers who need to add controlled frontal lighting for close-up work without changing their existing lens setup.

Secure Mounting During Extended Sessions

The adapter ring maintains a fixed position on the lens barrel once tightened, preventing rotational drift that can misalign the flash head. Its construction resists loosening from vibration during prolonged handheld or tripod-mounted shooting sessions.

Simple Thread-On Installation

Installation requires screwing the ring onto the lens filter threads and then attaching the flash unit to the adapter. The main risk is cross-threading if the ring is forced onto damaged or non-standard threads, which can jam the mechanism.

How it compares

Measured against everything we stock in Camera Extras & Accessory Packs, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 72% of the 2,266 comparable items (median $39.99).

Specifications

Product
Brand nameSIGMA
Model nameF30S17

Questions about this item

Does the SIGMA F30S17 adapter ring draw any power or generate heat when mounted on a lens all day?

The adapter ring is a passive metal ring with no electronics, so it draws no power and produces no heat during extended use.

Which flash units and lenses does the 55 mm SIGMA F30S17 ring connect together?

It fits lenses with a 55 mm filter thread and accepts SIGMA macro flash models that use the same 55 mm mounting interface.

Will the F30S17 ring work with older SIGMA macro flashes released before 2018?

Yes, as long as the older flash uses the 55 mm adapter mount, the ring will couple it to any 55 mm threaded lens.

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