FUJIFILM FUJINON TELECONVERTER XF1.4X TC WR
1.4× rear teleconverter for Fujifilm X
US 2017/0090163 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 (4 lenses)
FUJIFILM FUJINON XF 100-400mm f/4.5-5.6 R LM OIS WR— 100-400mm, f/4.5-5.6, 21 elements / 14 groupsFUJIFILM FUJINON XF 50-140mm f/2.8 R LM OIS WR— 23 ELEMENTS / 16 GROUPS, f = 50–140 mm (design 51.52–135.96 mm), F/2.8 CONSTANT (DESIGN F/2.88)FUJIFILM FUJINON XF 70-300mm f/4-5.6 R LM OIS WR— 17 ELEMENTS / 12 GROUPS, 70-300mm MARKETED / 72.053-291.097mm EXAMPLE 6, f/4-5.6 MARKETED / f/4.12-5.77 EXAMPLE 6FUJIFILM FUJINON XF 80mm f/2.8 R LM OIS WR Macro— 16 ELEMENTS / 12 GROUPS, f = 78.79 mm, F/2.88