Third Party Lenses

Patent: Tamron 85mm f/1.8 VC

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A patent for a Tamron 85mm f/1.8 VC has appeared. Is Tamron following Sigma and getting into the quality prime market, but with Vibration Correction (Image Stabilization)?

Canon’s 85mm offerings, the EF 85mm f/1.2L II and EF 85mm f/1.8 could probably both use a refresh, though we haven’t heard anything about either in a very long time. I can’t see Canon ever adding IS to a fast (f/1.2) 85mm lens, but we might see something like an 85mm f/2 IS STM one day.

Patent Publication No. 2015-96915 (Google Translated)

  • Published 2015.5.21
  • Filing date 2013.11.15

Example 1

  • Focal length f = 82.87-82.02-77.72mm
  • Fno. 1.85-1.88-2.01
  • Full field angle 2ω = 28.59-27.41-23.18 °
  • FB 18.04mm

Tamron patent

  • Of positive and negative negative 3-group configuration
  • Inner focus (the second group)
  • Anti-vibration (Group 3)

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