215° Zero F-Theta Fisheye M12 Lens for IP67 Embedded Vision

215°@6.8mm M12 Fisheye Lens

The CIL220 is a small form-factor 1.8mm M12 Fisheye lens which provides a 215° Field of View at 6.8mm image circle. The nearly 0% F-theta distortion results in consistent magnification in the 160° FoV range. Additionally, the small size, IP67-rating, and all-glass all-metal make it great for embedded vision systems.
$39.00

478pcs CIL220-F2.3-M12C650 (F/2.3 / M12C / With 650nm IRC Filter) in stock in the US

173pcs CIL220-F2.3-M12CNIR (F/2.3 / M12C / Without Filter) in stock in the US

In stock — orders before 12 PM PST ship same day

Lens Features

IP67+ Rated

Ideal for exterior-facing applications requiring water and dust resistance.

215°, F-θ and 5MP+

Minimize fisheye compression with 0% F-θ distortion at 200°+ FoV.

Miniature Size & IP67+

The 16.3mm TTL makes the CIL220 great for miniature camera applications.

Optical and Mechanical Specification Table

Lens Parameter Performance Detail
Part NumberCIL220
EFL1.8
F# 2.3, 2.8
Resolution2MP-5MP 1/1.7" (F/2.3); 8MP+ 1/1.7" (F/2.8)
Field of View215° — Calculate FoV for your sensor
Image Circle6.8mm
Distortion0% F-θ
Weight4.0g
IR Cut-Off Filter650nm
ConstructionAll Glass, Aluminum

Mechanical Variants

Variant Description
M12B IP69K, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel
M12C IP69K, Hydrophobic Coating 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 7mm-9mm tall mount
Allied Vision Alvium S-Mount No
FLIR Blackfly S Board No
iDS uEye LE Rev1.1: No, Rev1.2: No
The Imaging Source M12 No
Basler Dart S-Mount Please submit inquiry to Basler

*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 CIL220 M12 fisheye lens?

The CIL220 provides a 215° field of view at 6.8mm image circle, making it one of the widest M12 fisheye lenses on the market.

What does 0% F-theta distortion mean on the CIL220 215° fisheye?

F-theta (F-θ) distortion describes how angular field positions map to image height. At 0% F-θ, magnification is consistent across the field — objects in the 160° central range are not compressed relative to the image center. This matters for machine vision tasks requiring accurate size or distance estimation from fisheye imagery.

What is the difference between the CIL220 M12B and M12C variants?

Both variants are IP69K-rated with AL6061 aluminum construction. The M12C adds a hydrophobic coating on the first lens surface to repel water droplets and resist fouling from rain or spray. The M12B uses standard BBAR anti-reflection coating instead.

What cameras are mechanically compatible with the CIL220 fisheye M12 lens?

The CIL220 requires a 7mm-9mm tall M12 holder. The Commonlands CLA018 and e-con Systems standard S-mount boards are confirmed compatible. Allied Vision Alvium, FLIR Blackfly S, iDS uEye LE, and The Imaging Source M12 boards are not mechanically compatible.

Does the CIL220 ship with or without a 650nm IRC filter?

Both filter options are available. The CIL220-F2.3-M12C650 includes a pre-installed 650nm IRC filter; the CIL220-F2.3-M12CNIR ships without a filter for NIR or broadband applications.

Is volume pricing available on the CIL220 M12 fisheye lens?

Yes. Volume pricing breaks begin at 50 units, with tiers at 100, 250, 500, 1k, 2.5k, 5k, 10k, and 25k. Contact Commonlands for a formal quote.

The CIL220 is a 1.8mm F/2.3 fisheye M12 lens with a 215° field of view at 6.8mm image circle — one of the widest available in a standard M12 package. What makes it unusual at this FoV is the near-zero F-theta distortion across the central 160° range. Most fisheye lenses at 200°+ show significant peripheral compression; the CIL220's design suppresses that where it matters most for machine vision tasks like object detection, distance estimation, and omnidirectional surveillance.

Format coverage extends to 2/3" for circular fisheye imaging. At F/2.3, resolution targets 2-5MP on 1/1.7" sensors. At F/2.8, the same optical formula supports 8MP+ on 1/1.7" sensors. Weight is 4.0g. TTL is 16.3mm. This is a genuinely compact package for a lens with 215° coverage.

Two mechanical variants. The M12B uses BBAR coating on lens surface 1 with an IP69K-rated AL6061 aluminum cap and barrel — good for exterior applications with water and dust exposure. The M12C adds a hydrophobic coating on the first lens surface in place of BBAR, which helps repel water droplets and resist fouling in rain, spray, or condensation-prone environments. Both require a 7mm-9mm tall M12 holder, which is shorter than the 9mm-13mm standard — this is a hard mechanical constraint.

The lens is not compatible with most standard industrial board cameras. Allied Vision Alvium, FLIR Blackfly S, iDS uEye LE, and The Imaging Source M12 boards are all listed as mechanically incompatible. Confirmed compatible options are the Commonlands CLA018 and e-con Systems standard S-mount boards with 7-9mm holders. Basler Dart users should contact Basler directly for compatibility confirmation.

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.

Similar Waterproof

CIL219-F2.5-M12A650

200°@6.3mm Fisheye M12 Lens

$79.00

CIL337-F1.6-M12A650

Automotive 3.6mm M12 Lens

$39.00

CIL061-F1.9-M12B650

Fast 6mm M12 Lens

$39.00

CIL368-F1.8-M12A650

Wide-Angle 6.8mm M12 Lens

$79.00

CIL818-F2.0-M12A660

195°@5.2mm Fisheye Lens

$29.00

CIL290-F2.2-M12A660

190°@5.7mm Fisheye M12 Lens

$29.00

CIL222-F2.0-M12A650

188°@6.6mm IP67 M12 Fisheye

$39.00

CIL341-F2.0-M12A650

Wide-Angle 4mm M12 Lens

$79.00

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.