More on Amazon.com : http://www.amazon.com/gp/product/B004G8JILY?tag=thefatkidin06-20 <br /> <br />Nikon TC-20E III 2x AF-S Teleconverter - Grey Market <br /> <br />Enhanced Telephoto Versatility Affordable and portable gateway to extend telephoto reach ideal for sports wildlife surveillance and more <br />2x Optical Conversion Factor Doubles the focal length of select compatible NIKKOR lenses <br />Aspherical Lens Element Virtually eliminates coma and other aberrations especially at wide apertures <br />Nikon Integrated Coating IC Enhances light transmission efficiency improves color consistency and reduces flare <br />Advanced Optical Design 7 elements in 5 groups optimized for use with FX and DX digital SLRs engineeredto meet the needs of professional photographers
