Third mirrorless APS-C lens patent from Pentax: 16-55mm f/3.5-5.6

• 13 years ago
• Categories: Pentax
• Tags: Patents

After the 18-70mm f/3.5-7.1 and 18-55mm f/3.5-6.7 lens patents, Pentax filed another patent in Japan for a 16-55mm f/3.5-5.6 APS-C mirrorless lens:

• Patent: 2012-118431
• Release date: June 21, 2012
• Filing date: December 3, 2012
• Zoom ratio: 3.30
• Aperture: 3.6 - 5.8
• Focal length: 16.22 - 53.51mm
• Image height: 14.20mm
• Back focus: 4.181mm
• Lens length: 72.49 - 86.00mm
• Lens design: 9 lens elements in 8 groups,
• Internal focus