Nikon 105mm f2 AF DC Nikkor

https://www.imaging-resource.com/lenses/nikon/105mm-f2d-af-dc-nikkor/specifications/

• Patent #: 2011-112955

• Published date: June 9th, 2011

• Filing date: November 27th, 2011

• Focal length: 104.02mm

• Aperture: 1.98

• Angle of view: 23.48°

• Image height: 21.60mm

• Total lens length: 127.09mm

• Back focus: 44.44mm

• Maximum magnification: -0.13080

• No aspherical elements

• Internal Focus

Read more: https://nikonrumors.com/2011/06/10/nikon-af-s-105mm-f2-lens-patent.aspx/#ixzz8dXVcV2Zm