FUJIFILM FUJINON TELECONVERTER GF1.4X TC WR
1.4× rear teleconverter for Fujifilm G
US 2021/0003819 A1 — Tetsuya Ori
7 ELEMENTS / 3 GROUPS | 1.4× REAR CONVERTER | ALL SPHERICAL
A dedicated converter: it mounts only on lenses made to accept it. A teleconverter has no aperture stop of its own, so it is shown attached to a host lens, where the lens's stop stays the system stop and the focal length and f-number both grow by the converter's factor.
Mount it on a lens (3 lenses)
FUJIFILM FUJINON GF 100-200mm f/5.6 R LM OIS WR— 20 elements / 13 groups, f = 101.68–203.35 mm (patent), F5.6 nominal / F5.70 designFUJIFILM FUJINON GF 250mm f/4 R LM OIS WR— 16 ELEMENTS / 10 GROUPS, 250 mm f/4 (MARKETED), f = 242.544 mm · F/4.12 (DESIGN)FUJIFILM FUJINON GF 500mm f/5.6 R LM OIS WR— 21 ELEMENTS / 14 GROUPS, 500 mm f/5.6 MARKETED, 485.45 mm F/5.70 DESIGN