PLEASE BE ADVISED THAT THIS MODEL NEEDS TO BE PRE-ORDERED AND HAS AN ORDER LEAD-TIME OF APPROXIMATELY 2-4 WORKING DAYS. Warranty: 12 Months Manufacturer Warranty Specifications: Lens construction: 15 Elements in 11 Groups, including 3 Aspherical Lens Elements Angle of View: 75 to 23 Degree Closest Focusing Distance: 8.67 inches/0.22m Maximum Image Magnification: 0.26x (35mm equivalent Maximum Image Magnification 0.52x) Minimum Field Size: 66.5 x 50mm Number of Blades: 7 Maximum Aperture: f 2.8 Wide - f 3.5 Telephoto Minimum Aperture: f 22 Dimension: Diameter 73.5 x 88.5mm