USD 185.12
75 mm F2.8 C-mount megapixel lens for 2/3-inch sensors with manual iris, manual focus, and locking rings.
Discontinued Computar factory-automation megapixel lens for 2/3-inch C-mount cameras. Official product page identifies it as a 75 mm F2.8 monofocal lens with manual iris, manual focus, and locking set screws on the zoom and focus rings. Manufacturer documentation lists a 2/3-type image format, C-mount interface, 0.3 m to infinity focus range, M30.5 x 0.5 filter thread, and compact cylindrical body construction.
| Parameter | Value |
|---|---|
| Focal Length | 75 mm |
| Max. Aperture Ratio | 1:2.8 |
| Max. Image Format | 2/3 type; 8.8 mm x 6.6 mm (φ11 mm) |
| Mount | C-mount |
| Iris Control | Manual |
| Focus Control | Manual |
| Operation Range - Iris | F2.8 to F16C |
| Operation Range - Focus | 0.3 m to infinity |
| Back Focal Length | 21.5 mm |
| Flange Back Length | 17.526 mm |
| Filter Size | M30.5 P=0.5 mm |
| Effective Lens Aperture - Front | φ24.8 mm |
| Effective Lens Aperture - Rear | φ13.6 mm |
| Dimensions | φ35 mm x 57.75 mm |
| Weight | 113 g |
| Angle of View - Diagonal (2/3 type) | 8.5° |
| Angle of View - Horizontal (2/3 type) | 6.8° |
| Angle of View - Vertical (2/3 type) | 5.1° |
| Operating Temperature | -10°C to +50°C |
| Distortion (2/3 type) | -0.43% (y=5.5) |
| Distortion (1/2 type) | -0.22% (y=4.0) |
| Object Dimension at M.O.D. (2/3 type) | 4.1 cm x 3.1 cm |
| Object Dimension at M.O.D. (1/2 type) | 3 cm x 2.2 cm |
The 75 mm focal length and 2/3-type coverage make it suitable for inspection stations that need a narrow field of view and stable framing at a fixed working distance.
Captures small defects or aligned features without moving the camera closer to the process.
The F2.8 aperture and manual focus to infinity support fixed-installation imaging where components must be measured or verified from farther away than standard short-focus optics allow.
Allows accurate imaging of distant targets while maintaining a compact lens setup.
The locking iris and focus rings reduce drift after calibration, which is valuable in factory-automation systems subject to vibration or repeated setup changes.
Prevents focus and exposure changes from mechanical vibration or handling.
