6mm C-Mount lens \| Wide Angle C-Mount Lens for 1.85um pixels such as IMX226
6mm C-Mount Lens 1/1.7" 12MP+
The CIL561 is a 6mm C-Mount lens for 1/1.7" 12MP+ cameras such as IMX226. The F/2.4 and great MTF makes this lens ideal for demanding applications.
In stock — orders before 12 PM PST ship same day
Optical and Mechanical Specification Table
| Lens Parameter | Performance Detail |
|---|---|
| Part Number | CIL561 |
| EFL | 6.0 |
| F# | 2.4 |
| Field of View | 76° @ 9.3mm — Calculate FoV for your sensor |
| Image Circle | 9.3mm |
| Distortion | -2% |
| Weight | / |
| Construction | All Glass |
Mechanical Layout
Frequently asked questions
What sensors does the CIL561 6mm C-mount lens support?
The CIL561 is designed for 1/1.7\" sensors up to 12MP including the Sony IMX226 and ON Semiconductor AR0820, resolving at 1.85μm pixel pitch across a 9.3mm image circle.
How much distortion does the CIL561 have?
The CIL561 has -2% distortion, which is low enough for dimensional measurement and quality inspection without software correction in most machine vision pipelines.
Is the CIL561 aperture adjustable?
Yes. The CIL561 adjusts from F/2.4 wide open to F/16 stopped down. Use the depth of field calculator at https://commonlands.com/pages/camera-depth-of-field-calculator to optimize for your working distance.
What is the field of view of the CIL561 6mm C-mount lens?
The CIL561 covers 76° at its 9.3mm image circle on a 1/1.7\" sensor. Check exact horizontal and vertical coverage at https://commonlands.com/pages/camera-field-of-view-calculator.
Does the CIL561 ship same day from the US?
Orders placed before 12 PM PST ship same day from Commonlands in San Diego, California.
What is the minimum working distance of the CIL561?
The CIL561 minimum working distance is 75mm, suitable for close-range inspection and mid-range monitoring tasks.
Similar C‑Mount Lenses: 4mm – 75 mm Industrial Optics
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.