Overview
The Pentax C3516-M is a precision C-mount machine vision lens engineered for industrial imaging, CCTV systems, and optical inspection applications. This 35mm fixed focal length lens delivers sharp, reliable imaging performance across a wide range of sensor formats. The C3516-M is a 2/3″ 35mm F1.6 manual iris lens rated for 2-megapixel imaging.
Key Features
- Fixed 35mm focal length — ideal for mid-range field-of-view imaging in confined spaces and industrial environments
- f/1.6 maximum aperture — excellent light gathering for low-light inspection and quality imaging
- Manual iris control — precise iris adjustment (f/1.6 to f/16) for exposure optimization without electronic control
- C-mount standard — 1″ thread mount with 32 threads per inch, commonly used on CCTV cameras, microscopes and industrial image processing
- 2-megapixel rated — optimized optical performance for modern industrial camera sensors
- 27mm filter thread — compatible with standard optical filters and accessories
Technical Specifications
- Focal Length: 35mm fixed
- Maximum Aperture: f/1.6
- Iris Range: f/1.6 to f/16
- Mount Type: C-mount (1″ × 32 TPI)
- Sensor Format: 2/3″ optimized
- Filter Thread: 27mm
- Iris Control: Manual
- Megapixel Rating: 2 megapixel
- Horizontal Angle of View (2/3″ format): 14.76°
Typical Applications
- Industrial machine vision and quality control inspection
- CCTV surveillance and security monitoring
- Microscopy and magnified optical imaging
- Medical and laboratory imaging systems
- Document scanning and archival systems
- Research and development optical setups
Compatibility & Replacements
Compatible With
- Standard C-mount industrial cameras and frame grabbers
- CCTV surveillance equipment with C-mount interface
- Machine vision software platforms (Cognex VisionPro, Basler Pylon, National Instruments)
- Microscope systems with C-mount adapter capability
- Optical inspection systems using 2/3″ format sensors
Replaces / Drop-In Replacement For
- Modern equivalent: Ricoh FL-CC3516-2M (current model after Ricoh acquired Pentax Imaging)
- Legacy Pentax C-mount TV lenses with equivalent 35mm focal length and f/1.6 aperture
Works With
- C-mount compliant industrial cameras
- Standard C-mount filter accessories (27mm thread)
- Manual iris-compatible imaging systems
- 2/3″ and compatible sensor format cameras
- CCTV and surveillance platform ecosystems
