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Fisheye 2.5mm CS Mount Lens

A 2.5mm CS-Mount Fisheye Lens for CCTV Cameras and Raspberry Pi HQ

Fisheye 2.5mm CS Mount Lens

This 2.5mm CS mount fisheye lens provides 190° FoV at an image circle of 6.2mm. It has a manual adjustable aperture F/# and manual adjustable focus ring. The lens has a maximum aperture of F/1.6 for great low-light performance. The fisheye provides a full circular 190° image on 2/3" sensors and 190° horizontal on 1/2.3" sensors such as the Raspberry Pi HQ. It can be used on cameras up to 4K 8MP at F/1.6 and up to 14MP+ when stopped down to F/2.4.

4.8 ( 50 reviews)

$119.00
$0.00

There are 0 units CIL725-F1.8-CSANIR (F/1.8 / Without Filter / CS-Mount A) at our US location. We try to restock quickly. Please contact us for availability.

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Lens Features

>180° DFoV

Extended field of view for surveillance and webcam projects.

4K+ Resolution

Achieve SFR (system MTF) which matches the Pi HQ sensor, the Sony IMX477.

Drop-In Compatible

This lens can be quickly swapped in and out for other lenses.

Optical and Mechanical Specification Table

Lens ParameterPerformance Detail
Part NumberCIL725
Format Type 1/2.3"
EFL2.54mm
F# 1.8-14.0
Resolution 12MP
Field of View190° @ 6.4mm image circle
Calculate for your sensor using our M12 Lens Calculator
Image Circle6.4mm
Distortion-9% F-Θ
Weight81g
ConstructionAll-glass all-metal

Mechanical Layout

M12 Lens 6mm Wide-Angle

Camera Mechanical Compatibility Table*

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

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Volume Production Ready

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Looking for recommendations, trying to figure out where to start, or want to discuss customizations? Contact our US-based Optical Engineers.