Let’s Talk Numbers. Let’s Talk Performance.

In the world of professional optical engineering, the magic is hidden in the datasheet. You aren't looking for marketing fluff; you are looking for specific numbers that solve specific problems.

Meet the JSD2112. This isn't a lens for a consumer pocket camera; it is a precision instrument built for industrial vision, advanced security, and smart automotive systems.

Let’s break down the parameters that make this lens a standout performer.

1. EFL 2.16mm = The Big Picture

Effective Focal Length (EFL): 2.16mm
Why does this number matter? A short focal length means a massive view. The JSD2112 delivers an impressive 181° Field of View (FOV). It pushes the physical limits of what a single lens can see, allowing your device to monitor entire rooms, panoramic landscapes, or complex traffic intersections without blind spots.

2. F/NO 1.2 = The Light Master

Aperture (F/NO): 1.2
This is perhaps the most exciting number on the sheet. While standard lenses sit at F/1.8 or F/2.0, the F/1.2 aperture on the JSD2112 is a "light magnet." It allows a flood of photons to hit the sensor, ensuring that your machine vision system works perfectly even in near-pitch-dark conditions.

Benefit: Brighter images, less noise, and superior night vision performance.

3. TTL 17.41mm = Compact Efficiency

Total Track Length (TTL): 17.41mm
Space is a luxury you often don’t have. The JSD2112 packs its optical power into a short mechanical structure. At just 17.41mm tall, it is designed to fit into slim housings, compact board cameras, and tight industrial spaces without protruding awkwardly.

4. 5MP Resolution & 1/2.7" Image Circle

Resolution: 5MP | Sensor: 1/2.7" (Compatible with 1/2.8")
A wide view is useless if it’s blurry. The JSD2112 is tuned for 5 Megapixel sensors, ensuring high-definition clarity from the center to the edge. Whether you are using a 1/2.7" or 1/2.8" sensor, this lens ensures every pixel is pulling its weight.

5. Distortion < -3.17% = Controlled Reality

Optical Distortion: < -3.17%
Usually, ultra-wide 181° lenses turn the world into a fishbowl. Not this one. With distortion kept strictly low, the JSD2112 balances extreme coverage with image geometric integrity, making it ideal for AI algorithms that need to recognize shapes and distances accurately.

The Technical Summary

For the engineers and product designers who need it straight, here is your JSD2112 cheat sheet:

Model:JSD2112

Mount:M12 (S-Mount)

Focal Length:2.16mm (Wide)

Aperture:F/1.2 (Bright)

FOV:181° (Panoramic)

Resolution:5MP (Sharp)

Application:Industrial / Security / Automotive (Non-Consumer)

The Verdict:
The JSD2112 is what happens when you combine ultra-wide vision with ultra-low light capabilities in a compact M12 body.

Check your specs. If you need 2.16mm, F1.2, and 5MP, the JSD2112 is the only number you need to know.