Second mirrorless APS-C lens patent from Pentax: 18-70mm f/3.5-7.1

• 12 years ago
• Categories: Pentax

In addition to the 18-55mm f/3.5-6.7 lens from last week, Pentax filed another patent in Japan for a 18-70mm f/3.5-7.1 mirrorless APS-C lens:

• Patent 2012-108333
• Patent release date: June 7, 2012
• Patent filing date: October 18, 2010
• Zoom ratio: 3.92x
• Aperture: 3.60 - 6.95
• Focal length: 18.071 - 70.840mm
• Half angle of view: 11.7 - 45.7deg
• Image height: 14.24mm
• Back focus: 2.17mm
• Lens length: 70.23 - 100.0mm
• Lens design: 6 groups, 3 aspherical elements