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: 16 Elements in 15 Groups, including 3 ED lenses Dust & Drip Proof: Yes Focusing System: Internal Focusing System Angle of View: 24-6.2 Degree Closest Focusing Distance: 1.2m Maximum Image Magnification: 0.21x (35mm equivalent Max. Image Magnification 0.42x) Minimum Field Size: 81x61mm Number of Blades: 9 (Circular Aperture Diaphragm) Maximum Aperture: f 2.8(50mm) – f 3.5(200mm) Minimum Aperture: f 22 Dimension: Diameter 86.5x157mm