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: 12 Elements in 9 Groups, including 1 ED Lens Element Focusing System: Internal Focusing System Angle of View: 30 to 8.2 Degree Closest Focusing Distance: 0.9m Maximum Image Magnification: 0.14x (35mm equivalent Maximum Image Magnification 0.28x) Minimum Field Size: 124 x 93 mm Number of Blades: 7 (Circular aperture diaphragm) Maximum Aperture: f4 (40 mm)- f5.6 (150 mm) Minimum Aperture: f 22 Dimension: Diameter 65.5 x 72mm