NiSi

NiSi NISI-RGR3X-AD-49 Ricoh GR IIIx Lens Adapter 49mm

4.4 (153 reviews)

Attach any 49mm filter to your Ricoh GR IIIx with this precision aluminum alloy adapter from NiSi.

$21.00*
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*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

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Overview

The NiSi 49mm Lens Filter Adapter is a purpose-built accessory for the Ricoh GR IIIx, one of the most popular premium compact cameras among street and travel photographers. Because the GR IIIx lacks a built-in filter thread, this adapter fills a critical gap by providing a standard 49mm mounting point for circular polarizers, neutral density filters, UV filters, and other threaded accessories. Machined from aluminum alloy, it is lightweight at just 0.634 ounces yet rigid enough for secure, wobble-free filter attachment.

A key design advantage is that the adapter allows the GR IIIx's lens to retract while the adapter remains mounted, preserving the camera's compact profile for transport. A standard 49mm lens cap can then be attached over the adapter to protect the front element. As a direct replacement for the Ricoh GA-2, it offers GR IIIx photographers a well-constructed alternative that opens the door to creative filter work without sacrificing the camera's signature pocketability. Note that this adapter is not compatible with the standard Ricoh GR III—it is engineered exclusively for the IIIx variant.

Key Features

SEAMLESS COMPATIBILITY BOOST: Enhance your photography with the NiSi lens adapter, designed exclusively for the Ricoh GR IIIx camera. This precision-engineered accessory fits 49mm lens filter adapters and replaces the Ricoh GA-2, offering flawless integration for GR IIIx and Ricoh GR IIIx accessories. Please note: not compatible with GR III models. Elevate your Ricoh GR 3x setup with unparalleled convenience and compatibility.

STURDY LENS COMPANION: Enhance your photography with the NiSi lens adapter, specially crafted for the Ricoh GR IIIx cameras. Crafted from premium aluminum alloy, it offers reliable performance while seamlessly connecting lens filter adapters. Replace the Ricoh GA-2 with this sleek, functional design that enhances versatility for your Ricoh GR IIIx camera. This adapter ensures a secure fit and seamless integration with lens filter, allowing you to expand your creative possibilities.

ENHANCED CAMERA ACCESSORIES: Expand your creative photography with the NiSi 49mm Lens Adapter for Ricoh GR IIIx. Attach a variety of 49mm standard filter thread, including circular filters, ND filters, polarizers, effect filters, step-up rings, and other Ricoh GR IIIx accessories directly to your camera. This lens adapter replaces the Ricoh GA-2, allowing you to enhance your GR IIIx's capabilities and unlock endless photo opportunities.

UPGRADED LENS FLEXIBILITY: Effortlessly mount 49mm filters or other Ricoh GR IIIx accessories with this NiSi lens adapter for your Ricoh GR IIIx camera. Even when the lens is retracted, this lens filter adapter lets you capture shots without compromising on gear setup. A standard 49mm lens cap can be attached to protect the front element when filters are mounted and the lens is retracted. This tool is your go-to for filters and accessories like the Ricoh GA-2 replacement.

ADVANCED CAMERA ACCESSORY: Upgrade your Ricoh GR IIIx photography experience with the NiSi 49mm Lens Adapter, crafted to replace the Ricoh GA-2. This lens adapter is designed for easy compatibility with 49mm thread accessories and circular filters, offering seamless integration with your Ricoh GR IIIx camera. It's the ideal solution to expand your Ricoh GR IIIx accessories while improving overall functionality for sharper, more precise shots. A must-have for any Ricoh GR IIIx enthusiast!

Specifications

Brand
NiSi
Model
NISI-RGR3X-AD-49
Type
Lens Filter Adapter
Filter Thread
49mm
Compatibility
Ricoh GR IIIx (not compatible with GR III)
Material
Aluminum Alloy
Replaces
Ricoh GA-2
Dimensions
3.11 x 2.28 x 1.26 inches
Weight
0.634 ounces

Pros & Cons

👍 Pros

  • Premium aluminum alloy construction provides durability while keeping weight minimal at just 0.634 ounces
  • Allows the GR IIIx lens to retract with the adapter still attached, preserving the camera's pocketability
  • Compatible with the full range of standard 49mm threaded filters and accessories
  • Serves as a direct, well-fitting replacement for the Ricoh GA-2 adapter

👎 Cons

  • Exclusively compatible with the GR IIIx—GR III owners cannot use this adapter
  • Adds slight extra bulk to the compact GR IIIx body when attached
  • Does not include a lens cap, so a separate 49mm cap must be purchased for front element protection

Frequently Asked Questions

No, this adapter is designed exclusively for the Ricoh GR IIIx. It is not compatible with the standard GR III model.
It serves as a direct replacement for the Ricoh GA-2 adapter, providing the same 49mm filter thread functionality.
Yes, the adapter allows the GR IIIx lens to retract even while installed, and you can attach a standard 49mm lens cap to protect the front element when the lens is retracted.
Any standard 49mm threaded accessory works, including circular polarizers, ND filters, UV filters, effect filters, and step-up rings.