20mm M12 lenses for finite conjugate
20mm M12 Lenses short working distance
22mm S Mount Lenses
20mm M12 lenses for finite conjugate
20mm M12 Lenses short working distance
22mm S Mount Lenses

20mm M12 Lens For Up To 1/1.7" Sensors such as IMX226 and AR0821

Telephoto 21.8mm M12 Lens

The CIL121 is a 21.8mm M12 lens for up to 12MP+ 1/1.8" sensors. This lens is originally optimized for finite conjugate imaging, making it good for machine vision applications.
$59.00
Selected Part Number is: CIL121-F2.8-M12A650
Request Volume Pricing

There are 18 units CIL121-F2.8-M12A650 (F/2.8 / M12A / With 650nm IRC Filter) in stock in the US.

There are 9 units CIL121-F2.8-M12ANIR (F/2.8 / M12A / Without Filter) in stock in the US.

Lens Features

Telephoto Field of View

A long 21.8mm EFL is suitable for machine vision and telephoto applications.

Finite Conjugate Optimized

Optimized for 500mm working distance ensures good performance from infinity down to 50mm.

Large Format

Suitable for large format sensors up to 1/1.7" such as IMX226 and AR0821

Optical and Mechanical Specification Table
Lens Parameter Performance Detail
Part NumberCIL121
Format Type1/1.7"
EFL21.8mm
F#2.8 Fixed
Resolution12MP
Field of View18° @ 7.0mm
Calculate for your sensor using our M12 Lens Calculator
Image Circle9.4mm
Distortion ~1%
Weight6.8g
IR Cut-Off FilterP/N With: CIL121-F2.8-M12A650
P/N Without: CIL121-F2.8-M12ANIR
ConstructionAll-Glass
Mechanical Variants
Variant Description
"M12A" No Ingress Protection, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel

Mechanical Layout

A 20mm M12 Lens for Telephoto applications
Camera Mechanical Compatibility Table*
Camera/Mount Compatibility
Commonlands Compatible Mount CLA019
e-con Systems Standard S-Mount 10mm-15mm tall holder
Allied Vision Alvium S-Mount Yes
FLIR Blackfly S Board Yes
iDS uEye LE Rev1.1: Yes, Rev1.2: Yes
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.

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Engineering & Quality Assured

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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

Our 12mm, 16mm, 25mm, 35mm, 50mm M12 Lenses. Search all 50+ M12 Lenses including Wide-Angle.

Telephoto 18mm M12 Lens

CIL178-F2.0-M12A650

Telephoto 18mm M12 Lens

IR Corrected 12mm M12 Lens

CIL122-F2.0-M12ANIR

IR Corrected 12mm M12 Lens
IR Corrected 12mm M12 Lens
IR Corrected 12mm M12 Lens
12mm S-Mount Lens
IR Corrected M12 Lens
CIL122-F2.0-M12ANIR
IR Corrected 12mm M12 Lens
$59.00