Wide-Angle Fisheye M12 Lens \| For up to 12MP sensors w/1.55um pixels such as IMX377, IMX412
185°@7.8mm Fisheye M12 Lens
In stock — orders before 12 PM PST ship same day
Lens Features
Thermal Stability
Affordable 8G all-spherical all-metal fisheye design with thermal stability.
IP67-rated
“B” Variant IP67 for exterior facing applications requiring water and dust resistance.
Optical and Mechanical Specification Table
| Lens Parameter | Performance Detail |
|---|---|
| Part Number | CIL227 |
| EFL | 2.7 |
| F# | 2.5 |
| Field of View | 190° @ 8.0mm image circle — Calculate FoV for your sensor |
| Image Circle | 7.8mm as designed |
| Distortion | -11% F-Θ |
| Weight | 8g |
| IR Cut-Off Filter | P/N With: CIL227-F2.5-M12B660 P/N Without: CIL227-F2.5-M12ANIR |
| Construction | All Glass, Aluminum |
Mechanical Variants
| Variant | Description |
|---|---|
| M12A | No Ingress Protection, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel |
| M12B | IP67, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel |
Mechanical Layout
Camera Mechanical Compatibility Table*
| Camera/Mount | Compatibility |
|---|---|
| Commonlands CLA024 | CLA024 |
| e-con Systems S-Mount | 10mm - 14mm tall holder |
| Allied Vision Alvium S-Mount | Yes |
| FLIR Dragonfly S USB3 | 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.
Frequently asked questions
What sensors work with the CIL227 fisheye M12 lens?
The CIL227 resolves 12MP at 1.55μm pixel pitch on sensors such as the Sony IMX377 and IMX412. Its 7.8mm designed image circle fully covers common 1/2.3 inch to 1/2 inch formats.
What is the field of view of the CIL227?
The CIL227 gives 190° diagonal field of view at the 8.0mm image circle. On a 1/2.3 inch sensor, that works out to about 140° horizontal field of view. Calculate the exact angle at field of view calculator
Is the CIL227 available with IP67 sealing?
Yes, M12B variants such as CIL227-F2.5-M12B660 and CIL227-F2.5-M12BNIR include IP67 sealing for dust and water resistance.
What is the distortion of the CIL227 fisheye lens?
The CIL227 has -11% F-Θ barrel distortion. That is normal for a fisheye at this field angle, and modern dewarp routines handle it well.
Which cameras are compatible with the CIL227?
The CIL227 is compatible with e-con Systems S-mount boards using a 10-14mm holder, Allied Vision Alvium, FLIR Dragonfly S USB3, iDS uEye LE, The Imaging Source M12, and D3 Camera Modules. The Commonlands CLA024 holder works for board-level integration, and other compatible mounts are available.
Does the CIL227 fisheye lens ship from the US?
Yes, in-stock CIL227 variants ship same day from San Diego for orders placed before 12 PM PST. Contact us if you need current inventory for a specific variant.
Similar Fisheye
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.