Nikon filed a patent for a 24-70mm f/3.5-4.5 full frame lens

• 13 years ago
• Categories: Nikon Lenses, Nikon Patents

Nikon filed patent application 2011-221421 in Japan for a 24-70mm f/3.5-4.5 full frame lens. This lens only makes sense as a part of a “cheap” full frame body kit. The patent contains several different calculations:

Example #1:

• Focal length: 24.70-68.00
• Aperture: 3.51-4.51
• Omega (half field of view): 42.63-16.87
• Image height: 21.6-21.6
• Overall length: 112.599 – 138.896
• Back focus: 38.818-54.481

Example #2

• Focal length: 24.70-82.50
• Aperture: 3.60-4.60
• Omega (half field of view): 42.62-14.04
• Image height: 21.6-21.6
• Overall length: 121.098 – 158.098
• Back focus: 38.818-58.586

Example #3

• Focal length: 28.80-102.00
• Aperture: 3.63-4.62
• Omega (half field of view): 38.28-9.85
• Image height: 21.6-21.6
• Overall length: 123.531 – 157.844
• Back focus: 38.818-54.339

Example #4

• Focal length: 24.70-87.20
• Aperture: 3.60-5.80
• Omega (half field of view): 42.64-11.49
• Image height: 21.6-21.6
• Overall length: 124.699 – 156.696
• Back focus: 38.819-56.191

Example #5

• Focal length: 22.55-77.20
• Aperture: 3.59-5.78
• Omega (half field of view): 45.22-15.08
• Image height: 21.6-21.6
• Overall length: 126.365 – 166.395
• Back focus: 38.819-68.503