Hi-lows-note spotted two more Tamron patients on j-platpat.inpit.go.jp in addition to the previous find last week.
Tamron 15-30mm f/2.8
Embodiment 1
Focal length: 15.454 21.199 29.106 mm
F number: 2.90 2.90 2.90
Angle of view: 111.748 91.720 72.321
TAMRON filed a patent of 15 – 30 mm f/2.8 wide-angle zoom lens for 35 mm full-frame mirrorless cameras.
In this patent, several lenses relating to “17-28mm F/2.8 Di III RXD” are described.
Tamron 200-800mm f/5.6
Embodiment 1
Focal length: 205.426 447.698 774.302 mm
F number: 6.583 6.586 6.583
Angle of view: 6.008 2.752 1.586
Image height: 21.633 21.633 21.633 mm
Back focus: 56.1827 mm
Total length: 415.348 415.348 415.348 mm
TAMRON filed a patent of 200-800 mm f/6.5 for 35mm full-frame sensor cameras, not sure for mirroless.
