| Lens number | CF 4mm F2.8 210° Circular Fisheye 全周鱼眼镜头 |
| Aperture | F2.8 |
| Viewing angle | 210° |
| Aperture blade | 7片 |
| Maximum magnification | 0.11倍 |
| Filter diameter | |
| Weight | 约 135g |
| Focal distance | 4mm |
| Minimum aperture | F16 |
| Lens structure | 6组7片 |
| Nearest photographic distance (object-image distance) | 8cm |
| Focus drive mode | 手动 (MF) |
| Lens size (diameter/length) | 约Φ45.2mm x 25.5mm |
| bayonet | 索尼E、富士X、佳能EF-M、L |
MTF
Optical Chart
