Sigma 50mm f/2.8 EX DG OS HSM Macro lens patent
Sigma filed a patent in Japan for a Sigma Macro 50mm f/2.8 EX DG OS HSM lens with image stabilization:
For comparison, this is the lens diagram of the current 50mm F2.8 EX DG Macro lens:
- Patent publication: 2010-271458
- Release date: 12/02/2010
- Filing date: 05/20/2009
- Focal length: 51.50mm
- Fno (aperture): 2.915
- Image circle: 43.260mm
- 3 aspherical elements