Product Features: Lens Type: Fixed Focal Length Lens; Camera Format: Digital SLR; Focus Type: Manual Focus; Lens Max Aperture: f/3.5; Focal Length: 8mm; Mount: Nikon; Min Aperture: f/22; Closest Focusing Distance: 12 in; Groups / Elements: 10 Elements in 7 Groups; Designed for Digital Camera: Yes; Weight: oz