# L078-2.78-M12

### Description

2.78mm M12 wide angle low distortion fixed focus lens

[![IMG_0195_l.jpg](https://wiki.kurokesu.com/uploads/images/gallery/2021-04/scaled-1680-/IMG_0195_l.jpg)](https://wiki.kurokesu.com/uploads/images/gallery/2021-04/IMG_0195_l.jpg)

### Specifications

<table border="1" id="bkmrk-focal-length-2.8-12m" style="border-collapse: collapse; width: 100%;"><tbody><tr><td style="width: 50%;">Focal Length</td><td style="width: 50%;">2.78mm</td></tr><tr><td style="width: 50%;">Aperture</td><td style="width: 50%;">f/2.2</td></tr><tr><td style="width: 50%;">Image Size</td><td style="width: 50%;">10.16mm \[1/2.5”\]</td></tr><tr><td style="width: 50%;">Angle of View</td><td style="width: 50%;">- D: 112°
- H: 100°
- V: 80°

</td></tr><tr><td style="width: 50%;">Mount Type</td><td style="width: 50%;">**M12** x 0.5-6g</td></tr><tr><td style="width: 50%;">Minimum Object Distance</td><td style="width: 50%;">0.2m</td></tr><tr><td style="width: 50%;">Distortion</td><td style="width: 50%;">&lt;-3%</td></tr><tr><td style="width: 50%;">CRA</td><td style="width: 50%;">&lt;19°</td></tr><tr><td style="width: 50%;">Back Focal Length</td><td style="width: 50%;">4.92mm</td></tr><tr><td style="width: 50%;">Flange Back Length</td><td style="width: 50%;">3.74mm</td></tr><tr><td style="width: 50%;">External Dimensions</td><td style="width: 50%;">- D=18mm
- L=18.36mm

</td></tr><tr><td style="width: 50%;">AR coating</td><td style="width: 50%;">Yes</td></tr><tr><td style="width: 50%;">Net Weight</td><td style="width: 50%;">8g</td></tr></tbody></table>

### Relative illumination

[![01_illumination_out.png](https://wiki.kurokesu.com/uploads/images/gallery/2022-07/scaled-1680-/L2M01-illumination-out.png)](https://wiki.kurokesu.com/uploads/images/gallery/2022-07/L2M01-illumination-out.png)

### Distortion[![02_distortion_out.png](https://wiki.kurokesu.com/uploads/images/gallery/2022-07/scaled-1680-/02-distortion-out.png)](https://wiki.kurokesu.com/uploads/images/gallery/2022-07/02-distortion-out.png)

### Dimensions

[![L078-2_78-M12_dimensions.png](https://wiki.kurokesu.com/uploads/images/gallery/2021-04/scaled-1680-/L078-2_78-M12_dimensions.png)](https://wiki.kurokesu.com/uploads/images/gallery/2021-04/L078-2_78-M12_dimensions.png)