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 … Continue reading Tamron 15-30mm f/2.8 and 200-800mm f/5.6 Patents Found