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

There are 222 units CIL821-F2.4-M12B650 (F/2.4 / M12B / With 650nm IRC Filter) in stock in the US.

There are 79 units CIL821-F2.4-M12BNIR (F/2.4 / M12B / Without Filter) in stock in the US.

There are 59 units CIL821-F2.4-M12C650 (F/2.4 / M12C / With 650nm IRC Filter) in stock in the US.

There are 48 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 Number	CIL821
Format Type	1/2.7"
EFL	2.1mm
F#	2.4 Fixed
Resolution	10MP+
Field of View	126° @ 5.4mm image circle Calculate for your sensor using our M12 Lens Calculator
Image Circle	6.7mm
Distortion	<20% TV
Weight	4.0g
IR Cut-Off Filter	P/N With: CIL821-F2.4-M12B650 P/N Without: CIL821-F2.4-M12BNIR
Construction	Hybrid 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.

View and Download .STP and Mechanical .PDF Spec