Tamron Japan has just filed a new lens patent for Tamron 70-200mm f/4 VC lens. This Full-Frame lens would be much cheaper than Canon EF 70-200mm f/4L IS USM and Nikon AF-S NIKKOR 70-200mm f/4G ED VR lens.
Patent Publication No. 2016-126278 (Google Translated)
- Published 2016.7.11
- Filing date 2015.1.8
- Example 1
- Focal length 71.8092 109.9915 205.9615
- F-number 4.0989 4.1033 4.1023
- Half angle of 16.7567 10.8972 5.8621
- Patent of Tamron
- Positive and negative positive positive and negative 5-group zoom
- Inner zoom
- Inner focus
- Vibration control
Source: EGAMI
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