Low Distortion Lens – S04212307328F

S04212307328F-12.5MP High-resolution Low distortion Lens 4.25mm 86° F2.8 1/2.3″ M12 mount lens and S-mount lenses for industrial cameras

4.25mm 12.5MP M12 Low Distortion Lens

This 4.25mm M12 low distortion lens is designed for compact cameras requiring high resolution and accurate image reproduction. Supporting up to 12.5MP resolution, an 86° diagonal FOV on a 1/2.3″ sensor, and less than 1% TV distortion, it provides a strong balance between wide scene coverage and geometric accuracy. With an F2.8 aperture, 0.2m minimum object distance, 1.81mm minimum back focal length, and compact M12X0.5 mount, this fixed focal lens is well suited to machine vision, industrial inspection, smart imaging, and embedded camera systems.

Product Core Highlights

• 12.5MP high-resolution imaging supports detailed image capture for demanding compact camera applications.
• Less than 1% TV distortion helps preserve straight-line geometry and improve measurement and recognition accuracy.
• 4.25mm focal length with 86° diagonal FOV provides broad scene coverage without the extreme distortion associated with fisheye optics.
• Compact M12X0.5 mount simplifies integration into space-constrained camera modules and embedded vision systems.
• 7G + IRCF optical construction supports stable imaging with an integrated IR cut filter configuration.

Why Choose This M12 Low Distortion Lens?

High Resolution with Controlled Distortion

The combination of 12.5MP resolution and <1% TV distortion makes this lens particularly suitable when image detail and geometric accuracy are both important. Unlike ultra-wide lenses that prioritize maximum coverage at the expense of image geometry, this lens maintains a relatively wide 86° diagonal field of view while keeping distortion below 1%.

For applications where distortion directly affects inspection, measurement, object recognition, or image stitching, selecting an appropriate low distortion lenses can significantly improve the usable image area and downstream processing results.

Compact M12 Integration

The M12X0.5 mount provides a compact mechanical interface for small camera modules. The 1.81mm minimum back focal length also gives optical designers flexibility when integrating the lens into compact camera housings.

This makes the lens a practical choice for OEM camera development, embedded vision equipment, and compact M12 lenses where space and optical performance must be balanced.

Wide Coverage Without Fisheye-Level Distortion

With an 86° diagonal FOV, the 4.25mm focal length captures a broad area on a 1/2.3″ sensor while maintaining controlled image geometry. This makes it more appropriate for applications that require wide coverage but still need recognizable shapes, edges, and straight lines.

The lens is therefore positioned between conventional narrow-FOV fixed lenses and highly distorted fisheye optics.

M12 Low Distortion Lens Applications

Core Application Scenes

Designed for compact low-distortion machine vision application, this lens is suitable for systems that need high-resolution imaging while maintaining accurate object geometry.

Industrial Inspection

The 12.5MP resolution and <1% TV distortion make the lens suitable for compact inspection cameras where dimensional features, edges, labels, or surface details need to remain clearly defined. It can be integrated into inspection stations where a relatively wide field of view is required within a limited camera-to-object distance.

Embedded Machine Vision

The M12X0.5 mount and compact optical configuration make this lens well suited to embedded vision devices. It can support object recognition, component inspection, positioning, and visual guidance where camera size is constrained.

Explore more optical solutions through TOWIN’s machine vision solutions.

Smart Security Imaging

The 86° diagonal FOV provides useful scene coverage for compact monitoring cameras while the low distortion characteristic helps maintain natural object geometry. It can be used in indoor monitoring, access control cameras, equipment monitoring, and other compact smart security devices.

For broader security applications, see TOWIN’s smart security solutions.

Robotics and Compact Vision Systems

Robotic vision systems often require compact optics that can capture a sufficiently large working area without excessive geometric distortion. The 4.25mm focal length and 12.5MP resolution provide a useful combination for compact robotic cameras, visual positioning modules, and inspection end-effectors.

More application-specific options are available in TOWIN’s robotics vision solutions.

Compatible Device List

• 1/2.3″ 12.5MP camera modules
• Compact M12 machine vision cameras
• Embedded vision cameras
• Industrial inspection cameras
• Robotic vision cameras
• Smart security cameras
• Compact object recognition cameras
• Visual positioning modules
• OEM/ODM camera systems

12.5MP Resolution and <1% Distortion for Precision Imaging

For machine vision and inspection systems, resolution alone does not determine image quality. Excessive lens distortion can change the apparent position and shape of objects across the image, creating additional challenges for measurement and image processing.

This lens combines 12.5MP optical resolution with less than 1% TV distortion, making it a strong option for applications where high pixel detail and controlled geometry are required. For projects involving lens selection, sensor matching, and image-area optimization, TOWIN’s lens selection guide can help engineers evaluate focal length, sensor size, FOV, and optical performance together.

You can also use the FOV Calculator to estimate the relationship between sensor size, focal length, working distance, and field of view.

Frequently Asked Questions

Q: What sensor size is this 4.25mm M12 lens designed for?
A: The specified FOV is based on a 1/2.3″ sensor, with 86° diagonal, 73° horizontal, and 59° vertical coverage. The image format is specified as Max. Φ9.1mm.

Q: Is this lens suitable for machine vision?
A: Yes. Its 12.5MP resolution, <1% TV distortion, 4.25mm focal length, and compact M12 mount make it suitable for compact machine vision, inspection, recognition, and embedded imaging systems.

Q: Why is less than 1% TV distortion important?
A: Low distortion helps maintain the geometric relationship between objects and their captured images, which is especially useful for inspection, measurement, recognition, and other vision applications where image geometry matters.

Q: Is this a wide-angle lens?
A: It can be considered a relatively wide-angle lens for a 1/2.3″ sensor because it provides an 86° diagonal FOV. However, it is not positioned as a fisheye lens because its distortion is controlled below 1%.

Q: Is this lens IR corrected?
A: No. The specification lists 7G + IRCF, which indicates an optical construction with an IR cut filter. It should not be described as an IR corrected lens unless explicit IR correction performance is provided.

Q: What is the minimum object distance of this lens?
A: The minimum object distance is 0.2m, making it suitable for relatively close-range imaging applications where the camera needs to capture detailed subjects within a compact working area.

Q: Can this lens be used in compact OEM camera systems?
A: Yes. The M12X0.5 mount, short 1.81mm minimum back focal length, and compact optical configuration make it suitable for embedded and OEM camera designs where installation space is limited.

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