Tamron new 50mm F1.8 Lens with IS patent surfaced over the web, the 50mm lens is designed for APS-C size mirrorless camera like Sony NEX, see the full patent details below
Translated via google
- Patent Publication No. 2012-242690
- Release Date 2012.12.10
- Filing date 2011.5.20
- Related 2012-242689
- Applicant Sony , Tamron
- Example 1
- Focal length f = 51.50mm
- Fno. 1.84
- Half angle of view ω = 15.42 °
- β = -0.141 times
- Image height 14.2mm
- Tamron patent
- Group 3 consists of positive and negative positive
- Inner Focus (the second lens group)
- Some of the first lens group for anti-vibration
- Prevent the amount of movement to increase the magnification of the imaging lens anti-vibration, not too thick barrel
- Lighter is configured with only one lens anti-vibration
