Theia 4K lens SL1250M with variable focal length 12-50mm

Item number: A10368

EAN: 4260521253248

Infrared corrected telephoto lens with CS mount thread
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395,80 €

including 19% VAT., no shipping costs

Available now! (Shipping time: 1 - 2 workdays*)

Theia's high coated SL1250M telephoto lens with true 4K resolution for long range security surveillance and license plate recognition (LPR) applications and manual iris.

With a variable focal length of 12-50mm and superior imaging performance, the SL1250 is designed for image sensors from 1/2.3" to 1/1.7". 

The SL1250M is designed to be very compact so that it can be used in small housings such as 4" domes.

This Theia lens is designed for use on the new 4K box cameras for security and machine vision (production monitoring) applications, such as long range fence line surveillance, license plate recognition (LPR) and other long range security applications.

SL1250 versions are available with motorized or manual iris and CS mount, while sister TL1250 versions include motorized zoom and focus, photo interrupter limit switch and board mount options.


Similar to Theia's other lenses, the SL1250 series is a high-quality lens that allows installers to take full advantage of the high resolution of 4K, HD and multi-megapixel cameras.

The lens can be used on cameras with resolutions up to 12 megapixels (true 4K) and delivers a sharp image right to the edges.


Other features:

Lens: Theia SL1250 with variable focal length 12mm - 50mm.

Day/night use: Yes, thanks to IR corrected lenses

Thread: Mount CS

Sensor format: 1/1.7

Focal length: 12 - 50mm

Iris control: Manual

Angle of view horizontal: 36 - 8,6 °

MOD (minimum distance to objects): 2.5 m

You can find more Theia lenses in our lens page.

Technical details
Focal length 12mm - 50mm varifocal
F/# F/1.8 to closed
Resolution true 4K resolution, 12 MP
IR correction Yes
Mount type CS-mount
Image sensor size 1/2.3" up to 1/1.7"

Please find additional documentation here:

Data sheet

User manual

Photos & videos

Please find additional photos and videos here:

Theia SL1250 tele lens with 12mm focal length   Theia SL1250M tele lens with 50mm focal length


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