Low Distortion 1.8mm Wide-Angle M12 Lens for 8MP Sensors

Low Distortion 1.8mm M12 Lens

The CIL018 is a 1.8mm wide-angle M12 lens provides a 125° Horizontal Field of View on a 1/2.5" sensor. This lens is rated for 8MP+ and is one of the lowest distortion 130°+ M12 lenses on the market.
$39.00

CIL018-F2.8-M12B650 (F/2.8 / M12B / With 650nm IRC Filter) — we try to restock quickly, contact for availability

100pcs CIL018-F2.8-M12BNIR (F/2.8 / M12B / Without Filter) in stock in the US

In stock — orders before 12 PM PST ship same day

Lens Features

Ultra Wide-Angle FoV

One of the widest angle low distortion M12 lenses on the market.

4K+ Resolution

MTF suitable for 4K+ 1/2.5" sensors resulting from multiple aspheres.

Low Distortion

Low distortion makes objects appear normal — straight lines stay straight.

Optical and Mechanical Specification Table

Lens Parameter Performance Detail
Part NumberCIL018
EFL1.8
F# 2.8
Resolution6-8MP, 1.85µm, 1/2.5"
Field of View128° — Calculate FoV for your sensor
Image Circle6.8mm
Distortion-0.14
Weight8g
IR Cut-Off Filter650nm
Construction5G2P

Mechanical Variants

Variant Description
M12A No Ingress Protection, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel
M12B IP67-rated, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel

Mechanical Layout

Camera Mechanical Compatibility Table*

Camera/Mount Compatibility
Commonlands CLA018 CLA018
e-con Systems S-Mount 9mm-13mm tall holder
Allied Vision Alvium S-Mount Yes
FLIR Blackfly S Board Yes
iDS uEye LE Rev1.1: Yes, Rev1.2: Must use PN ending C-NO
The Imaging Source M12 Yes
D3 Camera Modules Contact D3 Engineering

*Mechanical compatibility only, assuming the standard M12x0.5 lens mount provided by the camera manufacturer. Please check optical compatibility separately.

Same Day Ship by 12 PM PST
US-Based Optical Engineering Support
25,000+ Stock in California
100% MTF Tested

Frequently asked questions

What is the field of view of the CIL018 1.8mm M12 lens?

The CIL018 provides 128° FoV at 6.5mm on a 1/2.5" sensor, with approximately 125° horizontal field of view. Image circle is 6.8mm as designed with a 7.1mm maximum.

What is the distortion spec of the CIL018 wide-angle M12 lens?

Distortion is -14% barrel distortion — comparatively low for a 128° M12 lens. The 5G2P construction with multiple aspherical surfaces is responsible for the tight aberration control across the field.

What is the difference between the CIL018 M12A and M12B variants?

Both share the same 5G2P optical design and F/2.8 aperture. The M12A has no ingress protection; the M12B is IP67-rated for splash-resistant and wet environments. Both use BBAR coating on surface 1 and AL6061 aluminum construction.

Is the CIL018 compatible with the Raspberry Pi HQ Camera?

Yes. The Raspberry Pi HQ Camera uses an M12 lens mount and is mechanically compatible with the CIL018. It is one of the better-performing wide-angle M12 lenses for Raspberry Pi builds at 6-8MP resolution.

What resolution sensors can the CIL018 M12 lens support?

The CIL018 is rated for 6-8MP sensors with 1.85µm pixel pitch. Sensors including the Sony IMX335 and AR0521 on 1/2.5" formats are the primary design targets.

Does the CIL018 ship same day and is volume pricing available?

Orders placed before 12 PM PST ship same day from San Diego, CA. Volume pricing breaks start at 50 units, with additional tiers at 100, 250, 500, 1k, 2.5k, 5k, 10k, and 25k.

The CIL018 is a 1.8mm F/2.8 wide-angle M12 lens with 128° FoV on a 1/2.5" sensor, -14% barrel distortion, and a 5G2P optical design with multiple aspherical surfaces. It consistently shows up on short lists for the lowest-distortion M12 lenses available at 125°+ horizontal FoV. If straight lines need to look straight in your application, this is a serious candidate.

Image circle is 6.8mm as designed, with a usable maximum of 7.1mm — a small margin for slightly oversized formats. At 6-8MP and 1.85µm pixel pitch, sensors like the IMX335 and AR0521 are the target. The aspherical elements suppress aberrations well enough that the MTF holds up at 4K on 1/2.5" sensors — not a given at this price point in this form factor. Weight is 8g.

Two mechanical variants. The M12A is the standard build: no ingress protection, BBAR coating on lens surface 1, AL6061 cap and barrel. The M12B adds IP67 sealing — same optical formula, same performance, but rated for splash and moisture exposure. Both require a 9mm-13mm tall M12 holder. Use the Commonlands CLA018 for a confirmed fit.

Camera compatibility is broad. Allied Vision Alvium, FLIR Blackfly S, iDS uEye LE (Rev1.1 yes; Rev1.2 requires C-NO suffix), and The Imaging Source M12 boards all accept this lens mechanically. D3 Camera Module users should contact D3 directly. The Raspberry Pi HQ Camera is also compatible — this lens is one of the stronger-performing wide-angle M12 options for Pi-based systems that need wide coverage without heavy barrel distortion.

STP files and mechanical drawings are available on the product page. Ships same day from San Diego before 12 PM PST. Volume pricing starts at 50 units with breaks at 100, 250, 500, 1k, and above.

Similar

CIL034-F2.3-M12A660

No Distortion 3.2mm Lens

$39.00

CIL059-F1.7-M12B650

Low Distortion 6mm M12 Lens

$49.00

CIL359-F1.6-M12A650

Automotive 5.9mm M12 Lens

$39.00

CIL122-F2.0-M12A650

IR Corrected 12mm M12 Lens

$59.00

CIL350-F2.4-M12A650

Telephoto 35mm M12 Lens

$59.00

CIL051-F2.8-M12ANIR

Telephoto 50mm M12 Lens

$79.00

CIL227-F2.5-M12B660

185°@7.8mm Fisheye M12 Lens

$39.00

CIL281-F1.8-M12A650

191°@6.4mm Fisheye Lens

$70.00

About Commonlands

Commonlands LLC designs and manufactures precision M12, C-mount, and M8 lenses for machine vision, robotics, and embedded camera systems. Based in San Diego, California, we stock inventory for same-day shipping and provide direct access to US-based optical engineers. Whether you need a single prototype lens or production volumes of 25,000+, our team supports the full lifecycle from optical design consultation through volume fulfillment.

Need help selecting the right lens for your camera module?

Contact our US-based Optical Engineers.