Arducam LN018 M12 Mount 1.6mm Ultra-Wide Angle Camera Lens

No, the official Raspberry Pi Camera Module V2 does not have a standard M12 lens mount. To use the LN018 lens, you must first install a compatible M12 lens holder adapter onto the camera board, such as the Arducam B0031 or B0103. The V2's fixed lens housing prevents direct mounting of interchangeable M12 lenses without this modification.

First, ensure your camera board has a compatible M12 threaded lens holder. Screw the LN018 lens into the holder clockwise until snug. To focus, point the camera at a detailed subject and slowly rotate the lens barrel clockwise to move it inward or counter-clockwise to move it outward. Adjust until the image on your monitor or display is sharp and clear. Lock the focus by tightening the locking screw if your holder has one.

The integrated 650nm IR-cut filter blocks infrared light wavelengths longer than 650nm from reaching the camera sensor. This is crucial for achieving accurate color reproduction under normal visible light conditions, as most color image sensors are sensitive to IR. Without this filter, colors would appear washed out and inaccurate, especially in mixed lighting environments common in indoor or outdoor monitoring scenarios.

The 1/4" optical format specification indicates the lens is designed to project an image circle that correctly covers a camera sensor with a 1/4-inch optical format diagonal. This is a common size for many compact Raspberry Pi and Arduino camera modules. Using it on a significantly larger sensor may cause vignetting (dark corners), while a much smaller sensor will only utilize the central portion of the lens's field of view.