Wide Angle Fisheye Lens for S Mount
Fisheye Wide Angle M12 Lens
Board Mount Lens Wide Angle Fisheye
Wide Angle Fisheye Lens for S Mount
Fisheye Wide Angle M12 Lens
Board Mount Lens Wide Angle Fisheye

195° M12 Wide Angle Fisheye Lens for up to 12MP 1/2" such as IMX377 and IMX412

185°@7.8mm Fisheye M12 Lens

The CIL227 is a 2.7mm wide-angle fisheye lens which provides a 185° Field of View at 7.8mm Image Circle. The lens has full coverage and ~140° HFoV on 1/2.3" 12MP+ sensors.
$39.00
Selected Part Number is: CIL227-F2.5-M12B660
Request Volume Pricing

There are 0 units CIL227-F2.5-M12ANIR (F/2.5 / M12A / Without Filter) at our US location. We try to restock quickly. Please contact us for availability.

There are 368 units CIL227-F2.5-M12B660 (F/2.5 / M12B / With 660nm IRC Filter) in stock in the US.

Lens Features

>180° FoV

Full 185° diagonal fisheye on commonly used 1/2.3" 12MP sensors.

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 NumberCIL227
Format Type1/2"-1/1.2"
EFL2.7mm
F#2.5 Fixed
Resolution12MP+
Field of View195° @ 8.2mm image circle
Calculate for your sensor using our M12 Lens Calculator
Image Circle8.2mm
Distortion -11% F-Θ
Weight7.6g
IR Cut-Off FilterP/N With: CIL227-F2.5-M12B660
P/N Without: CIL227-F2.5-M12ANIR
ConstructionAll 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

A 3mm Miniature M12 Fisheye Lens.
Camera Mechanical Compatibility Table*
Camera/Mount Compatibility
Commonlands Compatible Mount CLA024
e-con Systems Standard S-Mount 10mm - 14mm 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
Basler Dart S-Mount Yes

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

M12 Lenses Inspected in the USA.

Inspected in the US

Camera Design Customer Support Based in the USA.

US Engineering Support

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Customizations Available

M12 Lens provider

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