SONY FE 14mm f/1.8 GM

WO 2021/199923 A1, Numerical Example 1 — Takumu Yamada, Dai Matsuoka

14 elements / 11 groups
f = 14.42 mm design
F/1.85 design (marketed F/1.8)
114° official diagonal angle
6 aspherical surfaces

Focus Mechanism

Inner focus: L8-L13 (G2F) moves objectward by 1.69 mm; G1 and L14 remain fixed.

Optical Elements (14 physical)

ElementTypeGlass
L1Neg. Meniscus (2× Asph)M-BACD12 (HOYA; catalog ne 1.58547 as printed, vd 59.46 printed as 59.5; supplier unconfirmed)
L2Negative MeniscusTAC8 (HOYA; catalog ne 1.73234 as printed, vd 54.67 printed as 54.7; supplier unconfirmed)
L3Biconcave NegativeFCD515 (HOYA; catalog ne 1.59489 as printed, vd 68.62 printed as 68.6; supplier unconfirmed)
L4Biconvex PositiveE-FD8 (HOYA; catalog ne 1.69415 for the printed 1.69416, vd 31.16 printed as 31.2; supplier unconfirmed)
L5Biconcave NegativeTAFD25 (HOYA; catalog ne 1.91048 as printed, vd 31.32 printed as 31.3; supplier unconfirmed)
L6Biconvex PositiveNBFD29 (HOYA; catalog ne 1.77660 as printed, vd 29.74 printed as 29.7; supplier unconfirmed)
L7Biconvex Positive (2× Asph)M-TAF101 (HOYA; catalog ne 1.77173 as printed, vd 49.24 printed as 49.2; supplier unconfirmed)
L8Biconvex PositiveFCD100 (HOYA; catalog ne 1.43810 as printed, vd 95.10 printed as 95.1; supplier unconfirmed)
L9Biconvex PositiveFCD1 (HOYA; catalog ne 1.49845 as printed, vd 81.61 printed as 81.6; supplier unconfirmed)
L10Biconcave NegativeNBFD25 (HOYA; catalog ne 1.86252 as printed, vd 25.15 printed as 25.2; supplier unconfirmed)
L11Biconvex PositiveE-FDS1 (HOYA; catalog ne 1.93323 as printed, vd 20.88 printed as 20.9; supplier unconfirmed)
L12Biconcave NegativeNBFD25 (HOYA; catalog ne 1.86252 as printed, vd 25.15 printed as 25.2; supplier unconfirmed)
L13Biconcave Negative (2× Asph)M-TAFD305 (HOYA; catalog ne 1.85639 as printed, vd 40.10 printed as 40.1; supplier unconfirmed)
L14Positive MeniscusPCD40 (HOYA; catalog ne 1.62228 as printed, vd 63.88 printed as 63.9; supplier unconfirmed)