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

This entry was posted in Patents, Pentax lenses. Bookmark the permalink. Trackbacks are closed, but you can post a comment.
  • Back to top