Mini M12 Fisheye Lens for Board Mount Cameras

M12 Miniature Fisheye Lens for up to 1/2.3" sensors such as AR0521 and IMX335.

Q: What is a Fisheye Lens?

A: A fisheye lens is a lens with maximum field of view greater than 180° and which contains distortion. If you use a fisheye lens on a smaller sensor, then the resulting image is a wide angle image with less than 180 degree field of view, and therefore some people consider "wide angle" lenses to also be fisheye.

Q: What is an M12 lens (S-mount lens)?

An M12 lens is a compact lens with a 12 mm thread diameter, often called an S-mount lens. These lenses screw into a camera’s M12 lens mount and are commonly used in board-level cameras for embedded vision systems. M12 lenses are smaller than C/CS-mount lenses, making them ideal for space-constrained applications like robotics.

Q: What cameras can I use M12 lenses with?

There are many embedded vision cameras and AI cameras that are compatible with M12 lenses. As long as the camera's lens holder is compatible with the mechanical dimensions of the lens, the lens should focus! Please ensure you match the image circle, field of view (FoV), and resolution. We recommend checking out options from companies such as e-con Systems Cameras , iDS Cameras , The Imaging Source Cameras , D3 Engineering , and Hellbender Cameras .

Q: How do you focus an M12 lens?

Use focus targets, then slowly thread the lens while displaying a video. Go past focus, then come back to focus. For more detailed guidance, please refer to our full article on how to focus camera lenses .

226°@3.9mm Fisheye M12 Lens

The CIL212 is a 4K+ 226° M12 fisheye lens with a 3.9mm image circle. The edge resolution makes this lens great for 360° surveillance and computer vision.

$49.00

Selected Part Number is: CIL212-F2.2-M12A660

Request Volume Pricing

There are 27 units CIL212-F2.2-M12A660 (F/2.2 / M12A / With 660nm IRC Filter) in stock in the US.

There are 36 units CIL212-F2.2-M12ANIR (F/2.2 / M12A / Without Filter) in stock in the US.

Lens Features

Miniature Size

The 20mm TTL is great for doorbell cameras and aerial robotics cameras.

226° FoV

Create a compact camera with an amazingly large fisheye field of view.

Optical and Mechanical Specification Table
Lens Parameter	Performance Detail
Part Number	CIL212
Format Type	1/2.5"
EFL	1.1mm
F#	2.2 Fixed
Resolution	8-12MP
Field of View	226° @ 3.9mm Calculate for your sensor using our M12 Lens Calculator
Image Circle	3.9mm
Distortion	<10% F-Θ See mechanical drawing for Optical, FΘ, and full TV distortion.
Weight	6.0g
IR Cut-Off Filter	P/N With: CIL212-F2.2-M12A660 P/N Without: CIL212-F2.2-M12ANIR
Construction	Hybrid Glass/Plastic with Al6061 barrel

Mechanical Variants
Variant	Description
"M12A"	No Ingress Protection, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel

Mechanical Layout

Camera Mechanical Compatibility Table*
Camera/Mount	Compatibility
Commonlands Compatible Mount	CLA018
e-con Systems Standard S-Mount	7mm-9mm tall holder
Allied Vision Alvium S-Mount	Yes
FLIR Blackfly S Board	No
iDS uEye LE	Rev1.1: No, Rev1.2: No
The Imaging Source M12	Rev1.1: No, Rev1.2: PN must end in "C-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.

Click here to Access Full Mechanical Drawings, Download the STP Files, etc..

M12 Lenses C Mount Lenses.webp__PID:d39df4c6-9351-4eae-9938-992a7c9a721e

Engineering & Quality Assured

Optical Engineering for M12 Lenses.webp__PID:cabadc1d-9038-478a-9ec1-b9515597d704

US Engineering Support

M12 Lens in the US.webp__PID:de4930ea-2073-44ee-ad75-d40d9d92487e

Easy Global Shipment

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Volume Production Ready

Here are a Few Similar Fisheye Lenses. Calculate the FoV (With Distortion!) using Our Lens Calculator.

1 2

1 2 3

Q: What is a Fisheye Lens?

A: A fisheye lens is a lens with maximum field of view greater than 180° and which contains distortion. If you use a fisheye lens on a smaller sensor, then the resulting image is a wide angle image with less than 180 degree field of view, and therefore some people consider "wide angle" lenses to also be fisheye.

Q: What is an M12 lens (S-mount lens)?

Answer: An M12 lens is a compact lens with a 12 mm thread diameter, often called an S-mount lens. These lenses screws into a camera’s M12 lens mount and are commonly used in board-level cameras for embedded vision systems. M12 lenses are smaller than C/CS-mount lenses, making them ideal for space-constrained applications like robotics.

Q: What cameras can I use M12 lenses with?

A: There are many embedded vision cameras and AI cameras that are compatible with M12 leness. As long as camera's lens holder is compatible with the mechanical dimensions of the lens, the lens should focus! Please make sure to match the image circle, FoV, and resolution.

Q: How do you focus an M12 lens?

Answer: Use focus targets, then slowly thread the lens while displaying a video. Go past focus, then come back to focus. You can view our full article on how to focus camera lenses.

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M12 Miniature Fisheye Lens for up to 1/2.3" sensors such as AR0521 and IMX335.

226°@3.9mm Fisheye M12 Lens

Lens Features

Miniature Size

226° FoV

Mechanical Layout

Here are a Few Similar Fisheye Lenses. Calculate the FoV (With Distortion!) using Our Lens Calculator.