Looks like Sigma is playing with the idea to make a competitor for the Tamron 28-75mm FE lens . A new patent describes the following lens:
- Focal length: 28.79-83.51
- F value: 2.92
- Angle of view: 75.61-27.77
- Image height: 21.63
- Overall length: 135.02-164.94
via Asobinet
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