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: 11 Elements in 10 Groups, including 1 ED Lens Element Angle of View: 24 Degree Closest Focusing Distance: 9.45 inches/ 0.24m Maximum Image Magnification: 0.52x ( 35mm equivalent Maximum Image Magnification 1.04x ) Minimum Field Size: 33.3 x 25mm Number of Blades: 7 Maximum Aperture: f 2.0 Minimum Aperture: f 22 Dimension: Diameter 71 x 61.5mm