Ricoh filed two new patents for Pentax APS-C DSLR lenses
Ricoh filed two new patents for APS-C DSLR lenses:
Pentax 15-45mm f/2.8 APS-C DSLR lens patent
Focal length: 15.5～26.0～43.7 mm
F number: 2.9～2.9～2.9
Half angle of view: 44.3～28.4～17.6
Image height: 14.24 mm
Back focus: 35.592~50.304~67.802 mm
Pentax 18-105mm f/2.8 APS-C DSLR lens patent
Focal length: 18.5～43.5～101.9 mm
F number: 2.9～2.9～2.9
Half angle of view: 39.0～17.8～7.7
Image height: 14.24 mm
Back focus: 30.120~47.793~66.140 mm
Via hi-lows-note
