TAMRON 50-300mm f/4.5-6.3 Di III VC VXD — Optical Cross-Section & Ray Tracing

Home / Lenses / Tamron / TAMRON 50-300mm f/4.5-6.3 Di III VC VXDTAMRON 50-300mm f/4.5-6.3 Di III VC VXDUS 2024/0295723 A1↗ — Takahiko Sakai
19 ELEMENTS / 14 GROUPS
PATENT f = 51.509-290.867 mm
PATENT F/4.635-6.489
2ω = 45.833°-8.230°
ALL SPHERICAL
G2V VC / G4 INNER FOCUS
Focus MechanismNO_INTERNAL_RECONSTRUCTION. Example 1 publishes only infinity-focus zoom spacings. G4 (cemented L15+L16) is the focusing group and moves toward the image side at nearer distances, but no close-focus D25/D28 values are published; all focus pairs therefore remain identical. Tamron's production MOD is 0.22 m at wide and 0.9 m at tele and is not used to invent internal travel.
Optical Elements (19 physical)ElementTypeGlass
L1Negative Meniscus804465 class (vendor unresolved)
L2Positive Meniscus437951 class (vendor unresolved)
L3Biconvex Positive437951 class (vendor unresolved)
L4Negative Meniscus697555 class (vendor unresolved)
L5Biconcave Negative497816 class (vendor unresolved)
L6Positive Meniscus648338 class (vendor unresolved)
L7Biconcave NegativeS-LAL19 (OHARA catalog-equivalent; production supplier unspecified)
L8Positive Meniscus859300 class (vendor unresolved)
L9Biconvex Positive691548 class (vendor unresolved)
L10Biconvex Positive497816 class (vendor unresolved)
L11Biconcave Negative904313 class (vendor unresolved)
L12Biconvex Positive720347 class (vendor unresolved)
L13Biconvex Positive541472 class (vendor unresolved)
L14Biconcave Negative950294 class (vendor unresolved)
L15Biconvex Positive921240 class (vendor unresolved)
L16Biconcave Negative800422 class (vendor unresolved)
L17Biconvex Positive575415 class (vendor unresolved)
L18Biconcave Negative900374 class (vendor unresolved)
L19Negative Meniscus871407 class (vendor unresolved)

Element	Type	Glass
L1	Negative Meniscus	804465 class (vendor unresolved)
L2	Positive Meniscus	437951 class (vendor unresolved)
L3	Biconvex Positive	437951 class (vendor unresolved)
L4	Negative Meniscus	697555 class (vendor unresolved)
L5	Biconcave Negative	497816 class (vendor unresolved)
L6	Positive Meniscus	648338 class (vendor unresolved)
L7	Biconcave Negative	S-LAL19 (OHARA catalog-equivalent; production supplier unspecified)
L8	Positive Meniscus	859300 class (vendor unresolved)
L9	Biconvex Positive	691548 class (vendor unresolved)
L10	Biconvex Positive	497816 class (vendor unresolved)
L11	Biconcave Negative	904313 class (vendor unresolved)
L12	Biconvex Positive	720347 class (vendor unresolved)
L13	Biconvex Positive	541472 class (vendor unresolved)
L14	Biconcave Negative	950294 class (vendor unresolved)
L15	Biconvex Positive	921240 class (vendor unresolved)
L16	Biconcave Negative	800422 class (vendor unresolved)
L17	Biconvex Positive	575415 class (vendor unresolved)
L18	Biconcave Negative	900374 class (vendor unresolved)
L19	Negative Meniscus	871407 class (vendor unresolved)