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 Specification: Lens construction: 17 Elements in 12 Groups, including 3 ED lenses Angle of View: 14 to 5 Degree Closest Focusing Distance: 2.5m Maximum Image Magnification: 0.08x (35mm equivalent Maximum Image Magnification 0.16x) Minimum Field Size: 207 x 156 mm Number of Blades: 9 (Circular aperture diaphragm) Maximum Aperture: f 2.8 Minimum Aperture: f 22 Dimension: Diameter 124 x 276 mm