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

There are 32 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.

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

Global Shipment

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

Telephoto 12mm M12 Lens

CIL125-F2.4-M12IR

Telephoto 12mm M12 Lens

Telephoto 16mm M12 Lens

CIL160-F1.9-M12A650

Telephoto 16mm M12 Lens

Telephoto 26mm M12 Lens

CIL260-F2.0-M12IR

Telephoto 26mm M12 Lens

Telephoto 35mm M12 Lens

CIL350-F2.4-M12A650

Telephoto 35mm M12 Lens

Telephoto 50mm M12 Lens

CIL051-F2.8-M12A650

Telephoto 50mm M12 Lens
Telephoto 12mm M12 Lens
Telephoto 12mm M12 Lens
Telephoto M12 Lens 12mm
Telephoto 12mm M12 Lens
Telephoto 12mm S-Mount Lens
CIL125-F2.4-M12IR
Telephoto 12mm M12 Lens
$29.00
16mm M12 Lens CIL160
16mm M12 Lens CIL160
16mm M12 lenses CIL160
16mm S Mount Lens
CIL160-F1.9-M12A650
Telephoto 16mm M12 Lens
$39.00
25mm M12 Lens
25mm M12 Lens
25mm S Mount Lens
25mm lens for FLIR Cameras
CIL260-F2.0-M12IR
Telephoto 26mm M12 Lens
$79.00
35mm M12 Lens
35mm M12 Lens
35mm Board Mount Lens
35mm S Mount Lens
CIL350-F2.4-M12A650
Telephoto 35mm M12 Lens
$59.00
Telephoto 50mm M12 Lens
Telephoto 50mm M12 Lens
50mm Board Lens
50mm S Mount Lens
CIL051-F2.8-M12A650
Telephoto 50mm M12 Lens
$70.00
20mm M12 lenses for finite conjugate
20mm M12 lenses for finite conjugate
20mm M12 Lenses short working distance
22mm S Mount Lenses
CIL121-F2.8-M12A650
Telephoto 21.8mm M12 Lens
$59.00