SONY PLANAR T* 50mm f/1.4 ZA SSM — Optical Cross-Section & Ray Tracing

Home / Lenses / Sony / SONY PLANAR T* 50mm f/1.4 ZA SSMSONY PLANAR T* 50mm f/1.4 ZA SSMUS 2014/0071331 A1↗ — Kouji Katou, Yumiko Uehara, Motoyuki Ohtake
8 ELEMENTS / 5 GROUPS
f = 51.5 mm
F/1.45
2ω ≈ 46.8°
2 ASPHERICAL SURFACES
Focus MechanismRear focus — G1 fixed, aperture stop + G2 move as a unit (SSM drive).
Optical Elements (8 physical)ElementTypeGlass
L1Biconvex PositiveS-LAH55V (OHARA)
L2Biconcave NegativeS-FTM16 (OHARA)
L3Biconvex Positive (1× Asph)M-TAFD305 (HOYA catalog-equivalent; patent supplier unspecified)
L4Biconcave Negative613370 - E-F3/S-TIM3 moderate flint (code equivalent)
L5Biconcave NegativeS-TIM22 (OHARA catalog equivalent; production glass unspecified)
L6Biconvex PositiveS-LAH58 (OHARA)
L7Negative MeniscusE-FD15 (HIKARI)
L8Biconvex Positive (1× Asph)M-TAF101 (HOYA catalog-equivalent; patent supplier unspecified)

Element	Type	Glass
L1	Biconvex Positive	S-LAH55V (OHARA)
L2	Biconcave Negative	S-FTM16 (OHARA)
L3	Biconvex Positive (1× Asph)	M-TAFD305 (HOYA catalog-equivalent; patent supplier unspecified)
L4	Biconcave Negative	613370 - E-F3/S-TIM3 moderate flint (code equivalent)
L5	Biconcave Negative	S-TIM22 (OHARA catalog equivalent; production glass unspecified)
L6	Biconvex Positive	S-LAH58 (OHARA)
L7	Negative Meniscus	E-FD15 (HIKARI)
L8	Biconvex Positive (1× Asph)	M-TAF101 (HOYA catalog-equivalent; patent supplier unspecified)