Tamron Af18-250Mm F / 3.5-6.3 Di Ii Ld Aspherical [If] Macro Digital Dedicated F

Tamron Af18-250Mm F / 3.5-6.3 Di Ii Ld Aspherical [If] Macro Digital Dedicated For Nikon A18N
The World'S Largest Zoom Ratio In Its Class ''13.9 Times''. Easy-To-Use Wide-Angle 28Mm~ Super Telephoto 388Mm Equivalent Angle Of View Of The (35Mm-Format Equivalent) Achieved
??? High-Magnification Zoom Of The Concept That Tamron Has Been Pioneered In The Original ''Wide-Angle Also Telephoto Be Only One In Ok ''Very Simple That, Those That Meet The User'S Needs. Tamron Is Always Eye To The Origin, Has Been Working In The High Magnification Of The Zoom. By A ''Digital Single-Lens Reflex Camera Dedicated Design, While Achieving The Short Focal Length Of The Wide Side, How Far You Can Extend The Telephoto Side? ''Its Own Question To Is, Now, Was Implemented As An Ultra-High Magnification Zoom Lens Model A18 With The Times The World'S Largest Zoom Magnification 13.9. Until Just A Few Years Ago, In The World Of ''28-200Mm + 200-400Mm'' That Two Of The Zoom Lens (*) Has Been Implemented In ''The Wide Angle And Super Telephoto'' It Is, In The World Of Digital Single-Lens Reflex ''One Only.'' It Became Easy To Enjoy As.
??? (*) At The Time In 2000. The Combination Of 28-200Mm (Model 371D) And 200-400Mm (Model 175D).
Ultra High Magnification, Up To Achieve A Smaller Diameter, The Focal Length Of The Optical Design
??? Telephoto Side Aiming ''Optimizing Power Allocation'' To 250Mm To Extend The Ld (Anomalous Low Dispersion) Lens To Reduce The Axial Chromatic Aberration In The First Lens Group, Adopting One Of The Ad Lenses Other. Reduced Distortion And Spherical Aberration, Adopted Two Contributing Composite Aspherical Lens Compact In Place. Thoroughly Pursued An Optical Arrangement Of The Third Group In All Four Groups Was Determined To Optimize The Power Distribution Of The Entire Optical Configuration. As A Result, Various Aberrations Around The Astigmatism As Well As Satisfactorily Correct, Downsizing Due To The Small Diameter Of The First Group Were Ultra High Magnification, To Obtain The Best Optical Configuration.
0.45M Shortest Shooting Distance Throughout The Entire Zoom Range, The Maximum Magnification Of 1: 3.5 To Realize
??? Shortest Leading The Digital Single-Lens Reflex Camera Dedicated High Power Zoom The Shooting Distance 0.45 M, Is Realized In The Entire Zoom Range. Also, Maximum Magnification At The 250Mm Side, 1: 3.5.
Considering The Angle Of Light Incident On The Imaging Element, Also Taking Into Account The Influence Of The Aberration Variation Due To The Digital Single-Lens Reflex Camera To An Optimal Optical Design
??? Zoom Adopts A Consideration Optical Design So As To Accommodate The Angle Of Light Incident On The Imaging Element To The Periphery From The Center Within A Certain Range. As
Achieve High Resolution Performance
??? Digital Single-Lens Reflex Camera Dedicated Lens, High Resolution Performance, High Contrast Performance, Excellent Image Quality Flatness Realized, It Can Accommodate A Variety Of Shooting Scene.
Thorough Ghost Flare. Of Internal Adopted Surface Coating
??? Dslr Specific, To Deal With Internal Reflection Due To The Influence Of The Image Sensor In The Mirror Box, Suppressed Thoroughly Reflection Of The Lens Surface Multi-Coated And Have Adopted Aggressively Internal Surface Coating (Lens Bonding The Coating To The Surface). The
Mechanical Contrivance, The Ultra-High Magnification While Lightweight And Compact Design
??? Mechanical Contrivance, A Complex Structure In A Compact Body Paid, It Was Realized Excellent Portability, The Operability. Structure The Basis Of Af28-300Mm (Model A06), Review The Roles Of Each Barrel Part, To Further Advance The Knowledge Of Complex Mechanical Design Has Accumulated, Compact, Refinement, To Achieve Higher Magnification There. Also In Addition The Production Side, With Complex Structures ''Af18-250Mm F / 3.5-6.3 Di Ii Ld Aspherical [If] Macro (Model A18)'' For Commercialization Of Improved Precision, Weight And Strength Of The Parts Such As, Are Aimed At Innovation Of Manufacturing Technology.
To Prevent The Mobile Phone In A Convenient Zoom Lock Mechanism Adopted
??? Free-Fall When In Portable Mode Is Equipped With A ''Zoom Lock Mechanism''.
Order To Achieve A Good Imaging Performance Of Missing The Excellent Flower-Shaped Hood To The Light-Shielding Properties In The Standard Equipment
??? Clear, Coming In Shines Through The Outside Of The Angle Of View The Flower Hood For Cutting In An Effective Form Suitable Hazardous Radiation Into The Square Frame Of The Screen, As Standard Equipment As An Accessory.