A 2.1mm M12 Lens for 1/3
Tiny Pinhole Lens for S-Mount Cameras
15mm TTL Short M12 Lens for Surveillance
A 2.1mm M12 Lens for 1/3
Tiny Pinhole Lens for S-Mount Cameras
15mm TTL Short M12 Lens for Surveillance

Stereographic Wide-Angle 2.1mm M12 Lens for up to 1/2.7" sensors such as IMX219 and IMX214

Small 2.1mm M12 Lens

The CIL821 is a 6MP+ 2.1mm miniature S-Mount lens which provides a 125° Horizontal Field of View on 1/2.8" sensors. It's compact form factor and high resolution make it ideal for OEM applications such as doorbell cameras.
$39.00
Selected Part Number is: CIL821-F2.4-M12ANIR
Request Volume Pricing

There are 23 units CIL821-F2.4-M12ANIR (F/2.4 / M12A / Without Filter) in stock in the US.

There are 237 units CIL821-F2.4-M12B650 (F/2.4 / M12B / With 650nm IRC Filter) in stock in the US.

There are 81 units CIL821-F2.4-M12BNIR (F/2.4 / M12B / Without Filter) in stock in the US.

There are 305 units CIL821-F2.4-M12C650 (F/2.4 / M12C / With 650nm IRC Filter) in stock in the US.

There are 49 units CIL821-F2.4-M12CNIR (F/2.4 / M12C / Without Filter) in stock in the US.

Lens Features

Wide-Angle FoV

>145° FoV w/ stereographic distortion comparable to sports action camera lenses.

 4K Resolution

Optical resolution suitable for 12MP+ sensors up to 1/2.7" in format.

Compact Size

A short TTL of 15mm is ideal for weight and size-constrained applications.

Optical and Mechanical Specification Table
Lens Parameter Performance Detail
Part NumberCIL821
Format Type1/2.7"
EFL2.1mm
F#2.4 Fixed
Resolution10MP+
Field of View126° @ 5.4mm image circle
Calculate for your sensor using our M12 Lens Calculator
Image Circle6.7mm
Distortion <20% TV
Weight4.0g
IR Cut-Off FilterP/N With: CIL821-F2.4-M12B650
P/N Without: CIL821-F2.4-M12BNIR
ConstructionHybrid Glass/Plastic with Aluminum Barrel
Mechanical Variants
Variant Description
"M12B" No Ingress Protection, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel
"M12C" Glued IP67, BBAR on Lens 1 Surface 1, AL6061 Cap+Barrel

Mechanical Layout

The Mechanical Diagram for a Wide Angle F/2.4 Lens
Camera Mechanical Compatibility Table*
Camera/Mount Compatibility
Commonlands Compatible Mount CLA022
e-con Systems S-Mount With CLA021
Allied Vision Alvium S-Mount No
FLIR Blackfly S Board No
iDS uEye LE Rev1.1: No, Rev1.2: No
The Imaging Source M12 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.

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

M12 Lens Manufacturing.webp__PID:7f1f5e48-3df5-4feb-9fa4-5a6210d8de49

Volume Production Ready

Search all 50+ Wide Angle and Low distortion lenses and calculate the FoV with Distortion. 

Small 1.9mm M8/M12 Lens

CIL819-F2.0-M08A650

Small 1.9mm M8/M12 Lens

Small 2.1mm M12 Lens

CIL821-F2.4-M12ANIR

Small 2.1mm M12 Lens

Small 2.5mm M12 Lens

CIL825-F2.4-M12ANIR

Small 2.5mm M12 Lens

Wide-Angle 2.7mm M12 Lens

CIL327-F1.5-M12A660

Wide-Angle 2.7mm M12 Lens

GoPro 2.9mm M12 Lens

CIL330-F2.6-M12B650

GoPro 2.9mm M12 Lens

Wide-Angle 3.5mm M12 Lens

CIL335-F1.8-M12A660

Wide-Angle 3.5mm M12 Lens

F-theta Wide-Angle 4mm M12 Lens

CIL340-F2.0-M12A650

F-theta Wide-Angle 4mm M12 Lens

Wide-Angle 4.5mm M12 Lens

CIL344-F1.9-M12B660

Wide-Angle 4.5mm M12 Lens
2mm M12 Lens stereographic
2mm M12 Lens stereographic
2mm M12 Lenses stereographic
2mm M12 lens F2
CIL819-F2.0-M08A650
Small 1.9mm M8/M12 Lens
$39.00
A 2.1mm M12 Lens for 1/3
A 2.1mm M12 Lens for 1/3
Tiny Pinhole Lens for S-Mount Cameras
15mm TTL Short M12 Lens for Surveillance
CIL821-F2.4-M12ANIR
Small 2.1mm M12 Lens
$39.00
Stereographic M12 Lens
Stereographic M12 Lens
Stereographic M12 Lens
Stereographic M12 Lens
CIL825-F2.4-M12ANIR
Small 2.5mm M12 Lens
$39.00
3mm Wide Angle M12 Lens IMX415
3mm Wide Angle M12 Lens IMX415
Sony IMX415 Lens
M12 S Mount Lens for IMX415
CIL327-F1.5-M12A660
Wide-Angle 2.7mm M12 Lens
$39.00
IMX477 IMX577 GoPro Fisheye Lens
IMX477 IMX577 GoPro Fisheye Lens
GoPro Fisheye Lens M12
M12 GoPro Lens
CIL330-F2.6-M12B650
GoPro 2.9mm M12 Lens
$39.00
3.5mm Wide-Angle M12 Lens
3.5mm Wide-Angle M12 Lens
3.5mm Wide-Angle S-Mount Lens
Wide-Angle M12 Lens CIL335
CIL335-F1.8-M12A660
Wide-Angle 3.5mm M12 Lens
$49.00