

The M12-Mount 2.8-12mm IR Varifocal Lens from Marshall Electronics is designed for use with 3MP cameras that have a 1/2.7" sensor. This M12 mount lens features a 2.8-12mm focal length that delivers a 109-31.2° horizontal field of view. It offers fixed iris operation, along with manual focus and zoom operation with lock screws.
| Lens Mount | M12 |
| Sensor Compatibility | 1/2.5", 1/2.7" (3 MP) |
| Focal Length | 2.8 to 12mm |
| Back Focal Length | 6.9 to 14.4mm |
| Aperture | f/1 to 4 |
| Angle of View | 1/2.5" Sensor Horizontal: 109 to 31.2° Vertical: 81.6 to 23.4° Diagonal: 136 to 39° |
| Minimum Object Distance | 1' / 0.3 m |
| Focus Type | Manual Focus |
| Iris Type | Fixed |
| IR Corrected | Yes |
| Dimensions (DxL) | 1.1 x 1.6" / 28 x 41.7 mm |
| Weight | 1.2 oz / 35 g |