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: 10 Elements in 8 Groups, (including ED lens & 2 Aspherical lenses) Angle of View: 75 deg.-29 deg. Closest Focusing Distance: 0.25m Maximum Image Magnification: 0.19x (equivalent to 0.38x on a 35 mm film camera) Minimum Field Size: 91 x 68 mm Number of Blades: 7 (Circular Aperture Diaphragm) Maximum Aperture: f3.5 (14mm) - f5.6 (42mm) Minimum Aperture: f 22 Dimension: Diameter 65.5x61mm