FUJIFILM FUJINON XF 50-140mm f/2.8 R LM OIS WR

US 2017/0090163 A1 — Tetsuya Ori

23 ELEMENTS / 16 GROUPS
f = 50–140 mm (design 51.52–135.96 mm)
F/2.8 CONSTANT (DESIGN F/2.88)
2ω = 30.6°–11.6° (APS-C)
5 ED + 1 SUPER ED
0 ASPHERICAL SURFACES

Focus Mechanism

Inner focus driven by Fujifilm's Triple Linear Motor (manufacturer data). The patent publishes infinity data only and does not identify the focus group, so focus travel is not modeled: the focus slider does not move any group.

Optical Elements (23 physical)

ElementTypeGlass
L11Negative MeniscusS-LAM66 / N-LASF45 (801 350)
L12Biconvex Positive (ED)S-FPL51 (OHARA) (497 815, ED)
L13Plano-Convex Positive (Super ED)S-FPL53 (439 949, Super ED / fluorite-class)
L14Positive Meniscus (ED)S-FPL51 (497 815, ED)
L21Biconvex PositiveS-NBH8 (OHARA) (720 347)
L22Biconcave NegativeS-BSM22 (OHARA)
L23Biconcave Negative (ED)S-FPL51 (497 815, ED)
L24Positive Meniscus (heavy flint)S-TIH53 / N-SF57 (847 238/239)
L25Biconcave Negative (high-index)HOYA TAFD35 class (911 352)
L31Positive MeniscusS-LAM66 / N-LASF45 (801 350)
L32Biconvex Positive (anomalous-P_gF crown)S-PHM52 (OHARA) (618 634)
L33Plano-Concave Negative (SF6 flint)S-TIH6 / SF6 (805 254)
L41Biconvex Positive (ED)S-FPL51 (497 815, ED)
L42Positive Meniscus (short-flint, anomalous P_gF)S-NBH5 (OHARA) (654 397)
L43Biconcave Negative (very dense flint)S-LAH95 / N-LASF46A (904 313)
L44Biconvex Positive (ED)S-FPL51 (497 815, ED)
L45Biconvex Positive (SF6)S-TIH6 / SF6 (805 254)
L46Biconcave Negative (barium crown)S-BAL35 / N-SK5 (589 611)
L47Biconcave NegativeS-LAM66 / N-LASF45 (801 350)
L48Biconvex Positive (heavy flint, anomalous P_gF)S-NBH55 (800 298)
L49Biconvex Positive (fluor-crown)S-FSL5 (OHARA) (487 702)
L410Negative Meniscus (SF6)S-TIH6 / SF6 (805 254)
L411Negative Meniscus (high-index)HOYA TAFD35 class (911 352)

Teleconverters

FUJIFILM FUJINON TELECONVERTER XF1.4X TC WR, FUJIFILM FUJINON TELECONVERTER XF2X TC WR