Quick Answer

To use the NiSi Ring + Cap Kit on your Ricoh GR IV, attach one of the included rings to the lens barrel, then snap on the NiSi cap whenever you need protection—especially when using filters on the NiSi 49mm adapter.

Why the NiSi Ring Cap Kit is a smart choice

The NiSi Ring + Cap Kit is designed specifically for the Ricoh GR IV, not the GR III. It includes two premium rings in Royal Blue and Titanium Gray plus a precision-coated lens cap. The kit gives you a customizable look while protecting the lens from dust, scratches, and impacts.

A key advantage is its compatibility with the NiSi 49mm Filter Adapter and standard GN-3 rings. The cap fits over many filters mounted on the adapter, so you can keep protection on even when a filter is attached. Extra-thick filters like VNDs or CPLs may not allow the cap to fit, so check the thickness before relying on it.

Step-by-Step: Fitting the NiSi Ring and Cap

  1. Choose your ring: Pick either the Royal Blue or Titanium Gray ring from the kit. Both are made of durable aluminum alloy, so the choice is purely aesthetic. Check that the ring is the correct size for the GR IV; it is not compatible with the GR III.
  2. Attach the ring: Screw the ring onto the lens barrel of your Ricoh GR IV, turning it clockwise until it is snug. Do not over-tighten. If the ring feels loose, remove and re-seat it—never force it.
  3. Snap on the cap: Press the NiSi cap onto the ring until it clicks into place. Ensure it is centered to avoid gaps. If you have a filter attached, make sure it is not too thick; otherwise, the cap may not fit.
  4. Remove the cap when shooting: Pull the cap straight off and store it in your pocket or bag. The ring stays on the lens, so you can shoot immediately. Keep the cap clean and free of debris to avoid scratching the lens when reattaching.

Product Facts

  • NiSi Ring + Cap Kit for Ricoh GR IV (2 Rings + Lens Cap): The kit includes two durable aluminum-alloy rings (Royal Blue and Titanium Gray) plus a precision-coated NiSi lens cap. You can match the ring color to your style while getting reliable protection that resists wear.

    NiSi Ring + Cap Kit for Ricoh GR IV (2 Rings + Lens Cap)

    NiSi Ring + Cap Kit for Ricoh GR IV (2 Rings + Lens Cap)

  • NiSi Ring + Cap Kit for Ricoh GR IV (2 Rings + Lens Cap): The cap fits over many filters on the NiSi 49mm Filter Adapter, but extra-thick filters like VNDs or CPLs may not fit. If you frequently use thick filters, verify the cap fits before relying on it for protection.