Egami has discovered a new patent filed by Olympus in Japan. The new patent describes the Olympus 12-50mm f/2.8-4 lens for Micro Four Thirds system mirrorless cameras.
The patented Olympus lens is a faster version for the current 12-50mm f/3.5‑6.3 lens with a much more attractive f/2.8-4.0 aperture. The Olympus 12-50mm f/2.8-4 lens provides 24-100mm equivalent focal length in 35mm format and becomes a useful standart zoom lens for MFT cameras.
If this patent becomes available then the Olympus 12-50mm f/2.8-4 lens will most likely replace the current 12-50mm version. See the patent details below.
Olympus Patent for 12-50mm f/2.8-4 MFT Lens
The current Olympus 12-50mm f/3.5‑6.3 lens
Description and self-interpretation of the patent literature
- Patent Publication No. 2014-106243
- Publication date 2014.6.9
- Filing date 2012.11.22
- Example 4
- Focal length f = 12.24-21.83-39.20mm
- Fno. 2.88
- Angle of view 2ω = 88.78-53.15-30.05 °
- Image height Y = 10.820mm
- BF 16.899mm
- 105.920-106.468-129.386mm total length
- Example 7
- Focal length f = 12.24-24.30-49.20mm
- Fno. 2.88-3.43-4.08
- Angle of view 2ω = 87.51-47.00-24.10 °
- Image height Y = 10.820mm
- BF 14.234mm
- 107.672-120.646-152.973mm total length
- Olympus patents
- 5-group zoom of positive and negative positive positive and negative
- Inner focus
- MOD 0.25m
via Egami
