IDS 50mm C-Mount Lens – Model Ma-12M120-C5028 (1.2″, 12MP, F2.8–F16)

The IDS Ma-12M120-C5028 is a premium 50 mm industrial C-Mount lens purpose-built for high-resolution machine vision systems demanding exceptional sharpness and dimensional accuracy. Designed for large 1.2″ sensors and optimized for pixel sizes down to 3.45 µm, it maintains excellent contrast, uniform illumination, and low distortion even at higher magnifications. With a working distance range from 90 mm to 122 mm, manual iris and focus adjustment, and a rugged all-metal build, this 12MP lens provides reliable, repeatable performance in automated inspection, precision measurement, robotics, and electronics quality verification applications. Its stable optical geometry and minimal TV distortion make it ideal for metrology-grade imaging where every micron matters.

Product Specifications

• Model: Ma-12M120-C5028

• Article Number: 1012314

• Compatible Sensor Size: 1.2″ (Ø19.3 mm)

• Focal Length: 50 mm

• Resolution Capability: Pixel size 3.45 μm (Up to 12MP)

• Mount Type: C-Mount

• Aperture Range: F2.8 to F16 (Manual Adjustment)

• Working Distance: 90 mm to 122 mm

• Distortion Performance:

  • 0.02% at 0.50X

  • 0.05% at 0.75X

  • 0.08% at 0.90X

• Back Focal Length: 14.25 mm

• Chief Ray Angle: 7.44°

• Effective Diameter:

  • Front: 22.00 mm

  • Back: 19.00 mm

• Dimensions: Ø38.50 mm × 77.97 mm

• Filter Thread: M27 × 0.5–6H

• Weight: 0.15 kg

• Operating Temperature: −20°C to +60°C

Field of View (H × V × D)

At Magnification 0.90X

(from FOV 18.6 × 10.4 mm for 1.2″ sensor)

• 1.2″ Sensor:
  18.6 × 10.4 mm (Diagonal ≈ 21.4 mm)

• 1″ Sensor:
  14.1 × 10.7 mm (Diagonal ≈ 17.8 mm)

• 2/3″ Sensor:
  9.8 × 7.3 mm (Diagonal ≈ 12.1 mm)

• 1/2″ Sensor:
  7.1 × 5.3 mm (Diagonal ≈ 8.9 mm)

At Magnification 0.75X

(from FOV 23.5 × 13.2 mm for 1.2″ sensor)

• 1.2″ Sensor:
  23.5 × 13.2 mm (Diagonal ≈ 26.9 mm)

• 1″ Sensor:
  17.9 × 13.5 mm (Diagonal ≈ 22.6 mm)

• 2/3″ Sensor:
  12.4 × 9.3 mm (Diagonal ≈ 15.5 mm)

• 1/2″ Sensor:
  9.0 × 6.8 mm (Diagonal ≈ 11.3 mm)

At Magnification 0.50X

(from FOV 33.4 × 18.8 mm for 1.2″ sensor)

• 1.2″ Sensor:
  33.4 × 18.8 mm (Diagonal ≈ 38.2 mm)

• 1″ Sensor:
  22.3 × 16.8 mm (Diagonal ≈ 27.8 mm)

• 2/3″ Sensor:
  15.4 × 11.6 mm (Diagonal ≈ 19.3 mm)

• 1/2″ Sensor:
  11.2 × 8.4 mm (Diagonal ≈ 14.0 mm)

Key Benefits

• High-Resolution Performance: Supports 12MP imaging with 3.45 μm pixel compatibility for sharp, detailed inspection results.

• Optimized for Large Sensors: Designed for 1.2″ format with a large effective aperture to maintain uniform brightness and minimal vignetting.

• Ultra-Low Distortion: Distortion as low as 0.02%–0.08% across key magnifications ensures high metrology accuracy.

• Short-Range Macro Capability: Working distance of 90–122 mm enables precise close-up inspection of small or complex components.

• Stable Optical Geometry: Controlled 7.44° chief ray angle improves sensor coupling and edge-to-edge consistency.

• Industrial-Grade Durability: Rugged construction with smooth manual iris and focus adjustments ensures long-term stability in automation environments.

• Consistent Image Quality: High contrast, uniform sharpness, and reliable optical behavior even at higher magnifications.

Download Datasheet

Get the full technical details and mechanical drawings in the official PDF:

• Click here to download 1012314 Datasheet

Related IDS Imaging Lenses (Same Series)

• Ma-12M120-C2528 – 25 mm, 1.2″, 12MP
  A versatile mid-wide option offering strong brightness uniformity and low distortion, suitable for general inspection, robotics vision, and high-resolution imaging tasks requiring balanced FOV and detail.
• Ma-12M120-C3528 – 35 mm, 1.2″, 12MP
  Ideal for mid-range inspection applications where higher magnification and tighter framing are needed while maintaining excellent optical clarity and low geometric distortion.

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