NiSi Wide Conversion Lens Kit for Ricoh GR III

The NiSi Wide Conversion Lens Kit for Ricoh GR III is a premium optical expansion kit designed to transform the Ricoh GR III into an even more versatile tool for street, travel, landscape, architecture, and interior photography.

This complete kit includes the NiSi PR-10 0.78x Wide Conversion Lens and the dedicated NiSi 49mm Filter Adapter MKII, allowing the GR III’s native 28mm equivalent lens to achieve an expansive 21mm equivalent ultra-wide field of view. The wider perspective enables photographers to capture more of the scene while preserving the compact and discreet shooting experience the GR III is known for.

Designed for seamless integration, the kit fully supports the camera’s Macro Mode, allowing close-up shooting without needing to remove the conversion lens. Autofocus, metering, exposure control, and all standard shooting modes continue to function normally for a smooth user experience.

The included adapter features a secure auto-lock mechanical system, preventing accidental loosening or detachment during use. When the wide conversion lens is removed, the adapter provides a standard 49mm filter thread, enabling compatibility with ND, CPL, UV, diffusion, and other creative filters.

Optically, the lens benefits from an advanced multi-layer nano coating that minimizes flare, ghosting, and internal reflections for cleaner, higher-contrast images. Constructed from precision-machined aluminum alloy, the system remains lightweight, durable, and reliable for everyday carry and travel photography.

For added protection, the kit includes front and rear metal lens caps to safeguard the conversion lens during storage and transport.

Compact, durable, and creatively empowering, the NiSi Wide Conversion Lens Kit for Ricoh GR III is an excellent accessory for photographers seeking a wider perspective, filter compatibility, and enhanced creative flexibility without sacrificing portability.

Product Features in Detail

NiSi Wide Conversion Lens Kit for Ricoh GR III
The NiSi Wide Conversion Lens Kit for Ricoh GR III is a complete wide-angle solution designed to expand the creative potential of the GR III while preserving the compact, fast, and discreet shooting experience that makes the camera so popular.

This kit includes the NiSi PR-10 0.78x Wide Conversion Lens and the dedicated NiSi 49mm Filter Adapter MKII for Ricoh GR III, giving you everything needed to mount the conversion lens securely to your camera. Once attached, the system transforms the GR III’s native 28mm equivalent focal length into a wider 21mm equivalent field of view, making it ideal for photographers who want to capture more context, depth, and atmosphere in every frame.

Wider Perspective for Ricoh GR III Shooters
The Ricoh GR III is loved for its sharp 28mm equivalent lens, but some scenes demand an even wider perspective. With the NiSi PR-10 mounted, the GR III becomes a 21mm equivalent wide-angle camera, opening up new possibilities for landscape photography, street scenes, architecture, interiors, travel, and environmental portraits.

This wider field of view helps you include more of the surrounding environment while maintaining the natural, responsive handling of the GR III. It is especially useful in tight spaces, busy urban locations, or situations where stepping back is not possible.

Complete Kit with Dedicated GR III Adapter
The included NiSi 49mm Filter Adapter MKII for Ricoh GR III is purpose-built for the GR III body and replaces the Ricoh GN-1 ring adapter. It provides a secure 49mm threaded connection for the wide conversion lens while maintaining a clean, integrated profile on the camera.

Precision-machined for a gap-free and play-free fit, the adapter attaches firmly to the camera body and feels like a natural extension of the GR III.

Secure Auto-Lock Mechanism
The adapter features NiSi’s secure auto-lock mechanism, a mechanical locking system designed to prevent loosening or accidental detachment during handheld shooting, travel, or fast-paced street photography.

Unlike simple friction-fit adapters, the auto-lock design gives you confidence that the lens and adapter will stay firmly in place while you shoot.

Macro Mode Compatible
The NiSi Wide Conversion Lens is fully compatible with the Ricoh GR III Macro Mode, allowing you to move from wide-angle scenes to close-up details without removing the lens. This makes the kit especially useful for photographers who work quickly and want to keep their camera ready for a wide range of subjects.

Whether capturing textures, food, details, plants, signage, or small objects in the environment, the lens continues to support the flexible shooting style of the GR III.

Advanced Anti-Reflective Nano Coating
The optical elements feature NiSi’s advanced multi-layer nano coating to help reduce internal reflections, flare, and ghosting. This is especially valuable when shooting in bright sunlight, strong backlight, city lights, or high-contrast environments.

The coating helps maintain cleaner contrast, better clarity, and richer colour reproduction across the frame.

49mm Filter Compatibility
With the wide-angle conversion lens removed, the included adapter provides a standard 49mm filter thread for expanding the camera’s creative and protective options. You can mount ND filters for long exposures or video, CPL filters for reflection control and improved colour saturation, UV or clear protection filters for daily lens protection, and creative filters such as Black Mist or diffusion filters.

This gives the Ricoh GR III two practical shooting setups: use the wide conversion lens when you want a 21mm equivalent field of view, or remove it and use standard 49mm filters when you want light control, protection, or creative filter effects.

Premium Build Quality
Both the wide conversion lens and adapter are built for real-world use. The conversion lens features a durable aluminum alloy frame and comes with front and rear metal caps for protection when not in use. The adapter is also precision-machined from aluminum alloy, providing a lightweight yet reliable connection between the camera and lens.

The result is a compact, solid, and professional-feeling kit that suits daily carry, travel, and demanding creative work.

Full Camera Functionality Retained
The NiSi Wide Conversion Lens Kit does not interfere with normal camera operation. Autofocus, metering, auto exposure, and shooting modes continue to function as expected, allowing you to keep shooting naturally without changing the way you use your GR III.

A Wider Creative Tool for the GR III
For photographers who love the Ricoh GR III but want the option of a wider field of view, the NiSi Wide Conversion Lens Kit provides a practical, high-quality solution. It expands the GR III to a 21mm equivalent perspective while adding secure adapter integration, macro mode support, and premium optical performance in a compact, purpose-built system.