This was my second set that I never used so in great shape. If you have any questions please let me know before purchasing. 8mm T3.8 FISHEYE Lens. This is Rokinon’s, a removable hood, and de-clicked aperture. It can also be attached to follow focus. It is perfect for video and can also be used for standard photography. Aperture Range: T3.8 – 22. Optical Construction: 10 elements in 7 groups (1 Aspherical Lens). Angle of View: 180 degrees. Minimum Focusing Distance: 1ft. Length: 74.8mm or 2.95 inches.