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.

Find a M12 lens by CMOS imager specifications

• Search for M12 lenses by imager specifications

• 1" or larger format lenses

• 1/2" format M12 lenses

• 1/2.3" format M12 lenses

• 1/2.5" format M12 lenses

• 1/3" format M12 lenses

• 1/3.2" format M12 lenses

• 1/4" format M12 lenses

• 1/5" format M12 lenses

• Miniature M12 fisheye lenses and dewarping software

• M12 lenses with FOVEA distortion

Full list of M12 lenses/S-mount lenses:

PN	Description	Focal length(mm)	f/#	Imager Format	Field of view/ Depth of field	Recommended Holder	Sample Price (1-99)	Volume Price
DSL215C-NIR-F2.0	Miniature SuperFisheye lens no IR cut coating, EFL=1.6, F/2.0, metal barrel threaded M12x0.5, sealed first element	1.55	2	various	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL987A-650-F2.2	NoGhost 120dB lens for Automotive eMirror, 50deg HOV, F2.2, IR cut at 650nm, metal barrel threaded M12x0.5, sealed IP6K9K "	6.2	2.2	1/2.7"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL987A-650-F1.8	NoGhost 120dB lens for Automotive eMirror, 50deg HOV, F1.8, IR cut at 650nm, metal barrel threaded M12x0.5, sealed IP6K9K	6.2	1.8	1/2.7"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL236E-670-F2.0	Wide-angle hybrid lens for OV9715. EFL=1.23, F/2.0; Plastic barrel, aluminum cap; Decentration <1.0; Sealed; HP coating on L1-S1; Laser engraved PN, mark on retaining cap	1.23	2	1/4"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL228A-670-F2.0	All glass wide-angle lens with IR cut coating 670nm, advanced IR Blocking, metal barrel, for 1/4: sensor, EFL=2.9, F/2.0, M12x0.5	2.9	2	1/4"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL322C-IRC41-F2.8	Wide-angle, multi-megapixel, hybrid lens for day/night applications, 1/4" sensor, IRC41 filter, EFL 2.4, F/2.8, M12x0.5, plastic barrel	2.4	2.8	1/4"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL901E-NIR-F3.0	Glass lens, no IR cut filter, for 2/3" sensor, EFL=12, F/3.0, M18x1.0, specialty barrel	12	3	2/3"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL217D-NIR-F1.8	Miniature SuperFisheye lens for megapixel imagers up to 1/3” format. EFL=1.3mm, relative aperture F/1.8, no IR cut-off filter, metal barrel threaded M12x0.5	1.3	1.8	various	Calculate FOV Calculate DOF		$99 Order Sample	Request Volume Quote
DSL182G-NIR-F2.2	Superfisheye lens, EFL=1.39mm, Image Circle=5.4mm, HD, HDR, Tailored Distortion, 194deg HFOV, F/2.2, aluminum barrel threaded M12x0.5, sealed first element. No IR Cutoff Filter.	1.39	2.2	1/3"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL209K-650-F2.0-HP3	Wide-angle glass lens for ¼” sensor, IR cut at 650nm, EFL=1.7, F/2.0, M12x0.5, UV anodize, sealed IP6K9K, HP3 coating	1.7	2	1/4"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL853C-650-F2.0	Low-profile glass lens with IR cut coating for 1/2" sensor, EFL=8.0, F2.0, M12x0.5, wrench flats *CLEARANCE*	8	2	1/2"	Calculate FOV Calculate DOF		$19 Order Sample	Request Volume Quote
DSL215E-NIR-F2.0	Miniature super fisheye lens, NO IR cut coating, EFL = 1.6mm, F/2.0, M12x0.5, metal barrel. Include laser markings. Distortion dewarping software available.	1.55	2	various	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL240A-NIR-F2.1	Wide-angle, Day/Night, glass lens, no IR cut coating , for 1/3.4" sensor, EFL=4.36, F/2.1, M12x0.5, metal barrel	4.36	2.1	1/4"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL947C-700-F1.6	Low stray light lens for 1MP HDR sensors, IR cut-off at 700nm, EFL=6.1, F/1.6, metal barrel threaded M10x0.5	6.1	1.6	1/3"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
DSL947A-700-F1.6	Low stray light lens for 1MP HDR sensors, IR cut-off at 700nm, EFL=6.1, F/1.6, metal barrel threaded M8x0.5	6.1	1.6	1/3"	Calculate FOV Calculate DOF		$69 Order Sample	Request Volume Quote
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• By lens focal length and f/#
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