Low Distortion M8 Lens \| For up to 3MP sensors with 3μm pixels such as the AR0230
Small 2.8mm Lens
The CIL829 is a small form factor 2.8mm lens with both M12x0.5 and M8x0.35 size for up to 1/2.8" 2-3MP sensors. The low distortion of <1% makes this lens great for computer vision applications.
In stock — orders before 12 PM PST ship same day
Lens Features
Low Distortion
-1% Optical Distortion for wide-angle no-distortion
Optical and Mechanical Specification Table
| Lens Parameter | Performance Detail |
|---|---|
| Part Number | CIL829 |
| EFL | 2.8 |
| F# | 2.55 |
| Resolution | 3MP, (3um) |
| Field of View | 100° @ 6.6mm image circle — Calculate FoV for your sensor |
| Image Circle | 6.4mm as designed, 7.0mm maximum image circle |
| Distortion | -1% from Rectilinear |
| Weight | M8 version: 1.4g |
| IR Cut-Off Filter | P/N With: CIL829-F2.5-M08A650 / CIL829-F2.5-M12A650 P/N Without: CIL829-F2.5-M08ANIR /CIL829-F2.5-M12ANIR |
| Construction | 1G6P |
| Chief Ray Angle | 21° |
Mechanical Variants
| Variant | Description |
|---|---|
| M12A | M12x0.5, F/2.5, BBAR on Lens 1 Surface 1, AL6061 Cap+AL6061 Barrel |
| M08A | M8x0.35, F/2.5, BBAR on Lens 1 Surface 1, AL6061 Cap+AL6061 Barrel |
Frequently asked questions
What sensors work with the CIL829 2.8mm M8 lens?
The CIL829 supports 1/2.8 inch sensors up to 3MP with 3μm pixel pitch, including the ON Semiconductor AR0230. Its 6.4mm designed image circle, with 7.0mm maximum, covers those formats with margin.
How much distortion does the CIL829 have?
The CIL829 has -1% distortion from rectilinear. That is unusually low for a 100° field of view lens, so it works well for barcode reading, obstacle detection, and visual SLAM where geometry matters.
What is the difference between M08A and M12A mount options on the CIL829?
The M08A uses an M8x0.35 thread and weighs 1.4g, while the M12A uses the standard M12x0.5 thread. The optics stay the same, so you choose M8 for minimum size and M12 for standard S-mount compatibility.
Is the CIL829 suitable for drone or embedded vision applications?
Yes. The 1.4g M8 version fits drones, wearables, and compact embedded vision modules where every gram matters.
What is the chief ray angle on the CIL829?
The CIL829 has a 21° chief ray angle. You should compare that value with your sensor's microlens CRA specification because a large mismatch can create color shading at the edges. Read more at CRA mismatch guide
Does the CIL829 ship same day from the US?
Yes. Commonlands ships in-stock lenses same day from San Diego for orders placed before 12 PM PST.
Similar M12 Lenses (S-Mount Lenses) for Embedded Machine Vision
About Commonlands
Commonlands LLC designs and manufactures precision M12, C-mount, and M8 lenses for machine vision, robotics, and embedded camera systems. Based in San Diego, California, we stock inventory for same-day shipping and provide direct access to US-based optical engineers. Whether you need a single prototype lens or production volumes of 25,000+, our team supports the full lifecycle from optical design consultation through volume fulfillment.
Need help selecting the right lens for your camera module?
Contact our US-based Optical Engineers.