Are you on a mission to find the "Holy Grail" of compact optics? You know the struggle: you need a lens that supports a massive 1/2-inch sensor, but you are stuck with the size constraints of an M12 mount. Usually, you have to compromise.

Well, stop scrolling. The hunt is over.

Enter the JSD3122. It’s the optical powerhouse that proves you don’t need a bulky lens to get big-sensor performance. This isn’t a lens for your average selfie-snapping consumer camera; this is precision glass engineered for serious industrial applications, from high-speed machine vision to advanced security systems.

Here is why the JSD3122 is the best candidate for your next professional project.

1. The "Big Sensor" Breakthrough (Image Circle: 1/2")

Most M12 lenses top out at 1/3" or 1/4" sensors. The JSD3122 breaks the mold. It is designed with a 1/2" Image Circle, meaning it pairs perfectly with larger, high-sensitivity sensors (like the Sony IMX series often used in industry) without vignetting. You get the benefits of a larger pixel area—better dynamic range and sensitivity—all within the standard M12 footprint.

2. 12MP Ultra-High Resolution

Blurry edges? Not here. With a 12MP resolution rating, the JSD3122 is ready for the 4K era and beyond. Whether you are running OCR (Optical Character Recognition) on moving packages or inspecting microscopic components on a PCB, this lens resolves the fine details that other lenses miss.

3. Wide View, Straight Lines (FOV: 92° & Distortion <-1.54%)

Need a wide shot but hate that "fisheye" bubble look? The JSD3122 offers a generous 92° Field of View (FOV), perfect for capturing a broad scene. But the magic lies in the geometry: with optical distortion controlled to <-1.54%, your images remain linear and true-to-life. This is critical for measurement applications where "straight" must actually mean straight.

4. Compact & Bright (TTL: 20.49mm & F/2.2)

Space is money in system integration. With a Total Track Length (TTL) of just 20.49mm, this lens fits into the tightest housings. Plus, the F/2.2 aperture strikes the perfect balance, letting in plenty of light for fast shutter speeds while maintaining a sharp depth of field.

Part Number: JSD3122

Focal Length (EFL): 3.94mm

Aperture: F/2.2

Mount: M12 (Standard S-Mount)

Resolution: 12MP

Image Circle: 1/2" (Rare in M12!)

Field of View: 92°

Distortion: <-1.54% (Low TV Distortion)

TTL: 20.49mm

The JSD3122 isn't just another piece of glass; it's a problem solver for engineers. If you are building for robotics, drone mapping, or industrial inspection and need a 1/2" sensor format without the bulk of a C-mount lens, the JSD3122 is the spec-king you’ve been looking for.

Ready to upgrade your vision system? Focus on quality with the JSD3122.