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M12 lens | S-mount lens high resolution image What are M12 lenses/S-mount lenses ?

M12 lenses, also known as s-mount lenses are compact size lenses useful for a variety of embedded cameras. The barrel of these lenses are machined with M12 threads allowing easy mounting and focusing with M12 lens holder.  M12 lenses are sometimes called board-mount lenses. Please note that other lens mount options are also possible in addition to M12 lens mount. This article compares commonly seen lens mount options.

How to choose a M12 lens/S-mount lens ?

Sunex pioneered the development of M12 lenses/s-mount lenses.  We design and manufacture M12(s-mount) lenses in our own facilities with proven high-quality processes (automotive). We provide a suite of optical calculators (aka optics wizards) for selecting the right M12 lens for your application. Read a step-by-step guide for choosing the right M12 lens/s-mount lens.

M12 lens/S-mount lens design and manufacturing:

The general process of manufacturing M12 lenses involves optical design in Zemax or Code V software, and opto-mechanical design using CAD software. Once the design is approved and accepted,  prototypes are built using fast prototyping methods such as diamond-turning to fabricate lens elements.  Upon testing and acceptance of the prototypes, production grade tooling/fixtures are built. For example, if plastic elements are used in the design precision injection molds are built. If molded glass elements are involved glass molds are fabricated using special high temperature materials. In order to achieve consistent results and low unit cost, automatic assembly and testing methods are utilized as the final manufacturing step. Customized lens development is also possible for specialized applications.  View custom M12 lens/s-mount lens development process flow-chart.

Calculators for assisting lens selection:

Find a M12 lens by CMOS imager specifications:

Order samples or/and request quotes:

PN Description Focal length(mm) f/# Imager Format Field of view/
Depth of field
Recommended Holder Sample Price (1-99) Volume Price
DSL355A-NIR-F2.8 ***DSL355 lens is NOT compatible with GoPro Hero2 cameras*** Low distortion, wide-angle lens for up 1/2.5" format sensor, no IR cut-off, EFL=4.16mm, F/2.8, aluminum barrel threaded M12x0.5 4.16 2.8 1/2.5" Calculate FOV
Calculate DOF
CMT107, CMT821 CMT804 $69
Order Sample
Request Volume Quote
DSL355A-650-F2.8 ***DSL355 lens is NOT compatible with GoPro Hero2 cameras*** Low distortion, wide-angle lens for up 1/2.5" format sensor, with IR cut-off at 650nm, EFL=4.16mm, F/2.8, aluminum barrel threaded M12x0.5 4.16 2.8 1/2.5" Calculate FOV
Calculate DOF
CMT107, CMT821 CMT804 $69
Order Sample
Request Volume Quote
DSL851C-NIR-F2.8 **DISCONTINUED** Low-profile glass lens with plastic barrel for 1/3" sensor without IR coating, EFL=6, F/2.8, M10X0.5, wrench flat head *CLEARANCE* 6 2.8 1/3" Calculate FOV
Calculate DOF
  $19
Order Sample
Request Volume Quote
DSL388B-660-F2.9 10+ Megapixel Tailored Distortion miniature wide angle lens with 660nm IR cut coating, EFL = 2.7mm, F/2.9, M12x0.5, metal barrel 2.7 2.9 1/2" Calculate FOV
Calculate DOF
CMT398, CMT491 $69
Order Sample
Request Volume Quote
DSL388B-NIR-F2.9 10+ Megapixel Tailored Distortion miniature wide angle lens without IR cut coating, EFL = 2.7mm, F/2.9, M12x0.5, metal barrel 2.7 2.9 1/2" Calculate FOV
Calculate DOF
CMT398, CMT491 $69
Order Sample
Request Volume Quote
DSL255A-650-F2.0 12+ Megapixel miniature fisheye lens with IR cut coating, EFL = 1.47mm, F/2.0, M12x0.5, metal barrel ***C-mount adapter available! CMT1205-C***. 1.47 2 1/2.5" Calculate FOV
Calculate DOF
CMT168-1122F $99
Order Sample
Request Volume Quote
DSL419B-650-F2.0 12+ Megapixel miniature fisheye lens with IR cut coating, EFL = 1.6mm, F/2.0, M12x0.5, metal barrel ***C-mount adapter available! CMT1205-C***. 1.6 2 1/2.5" Calculate FOV
Calculate DOF
CMT821, CMT002 $99
Order Sample
Request Volume Quote
DSL239A-650-F2.4 12+ Megapixel miniature fisheye lens with IR cut coating, EFL = 1.8mm, F/2.4, M12x0.5, metal barrel ***C-mount adapter available! CMT1205-C***. 1.82 2.4 1/2.5" Calculate FOV
Calculate DOF
CMT821, CMT002 $99
Order Sample
Request Volume Quote
DSL255A-NIR-F2.0 12+ Megapixel miniature fisheye lens without IR cut coating, EFL = 1.47mm, F/2.0, M12x0.5, metal barrel ***C-mount adapter available! CMT1205-C***. 1.47 2 1/2.5" Calculate FOV
Calculate DOF
CMT168-1122F $99
Order Sample
Request Volume Quote
DSL419B-NIR-F2.0 12+ Megapixel miniature fisheye lens without IR cut coating, EFL = 1.6mm, F/2.0, M12x0.5, metal barrel ***C-mount adapter available! CMT1205-C***. 1.6 2 1/2.5" Calculate FOV
Calculate DOF
CMT821, CMT002 $99
Order Sample
Request Volume Quote
DSL239B-NIR-F2.4 12+ Megapixel miniature fisheye lens, NO IR cut-off, EFL = 1.8mm, F/2.4, M12x0.5, metal barrel ***C-mount adapter available! CMT1205-C***. 1.82 2.4 1/2.5" Calculate FOV
Calculate DOF
  $99
Order Sample
Request Volume Quote
DSL239A-NIR-F2.4 12+ Megapixel miniature fisheye lens, NO IR cut-off, EFL = 1.8mm, F/2.4, M12x0.5, metal barrel ***C-mount adapter available! CMT1205-C***. 1.82 2.4 1/2.5" Calculate FOV
Calculate DOF
CMT821, CMT002 $99
Order Sample
Request Volume Quote
DSL491A-655-F2.8 14+ Megapixel miniature wide angle lens with 655nm IR cut coating, EFL = 3.2mm, F/2.8, M12x0.5, metal barrel 3.17 2.8 1/2" Calculate FOV
Calculate DOF
CMT398 $99
Order Sample
Request Volume Quote
DSL491D-655-F2.8 14+ Megapixel miniature wide angle lens with 655nm IR cut coating, EFL = 3.2mm, F/2.8, M12x0.5, metal barrel 3.17 2.8 1/2" Calculate FOV
Calculate DOF
CMT398, CMT491 $99
Order Sample
Request Volume Quote
DSL261B-655-F2.8 14+ Megapixel miniature wide angle lens with 655nm IR cut coating, HDR,EFL = 3.0mm, F/2.8, M12x0.5, metal barrel 3 2.8 1/2" Calculate FOV
Calculate DOF
CMT398, CMT491 $69
Order Sample
Request Volume Quote
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