Ricoh filed a patent in a Japan for a 35-80mm f/4 full frame lens that is most likely designed for the Pentax K-1 DSLR camera. Here are the details:
- Patent No: 2016-99586
- Published on 2016.5.30
- Filing date: 2014.11.26
- Zoom ratio: 2.19
- FNO: 4.1 – 4.1 – 4.1
- Focal length: 36.11 – 51.17 – 79.07
- Half angle of view: 31.9 – 22.9 – 15.0
- Image height: 21.64 – 21.64 – 21.64
- Back focus: 48.06 – 55.95 – 58.90
- Overall length: 160.34 – 166.92 – 192.65
Ricoh recently also filed patents for a 100-300mm f/4 and 200mm f/2.8 full frame DSLR lenses.
Via Egami
