It is no rumor anymore. Sigma officially anounced a 23/1.4 APS-C lens, a 17/4.0 and 50/2.0 fullframe lens.
I preordered the Sigma 50/2.0 and will report here. I hope that it will not feel "too heavy". According to youtube reviewers, it is very good.
The Sigma 50/1.4 Art is too big and too heavy for me (and too expensive), the Lumix 50/1.8 also too big and the Sigma 45/2.8 is with F2.8 in some situations too difficult to seperate the background
I preordered the Sigma 50/2.0 and will report here. I hope that it will not feel "too heavy". According to youtube reviewers, it is very good.
The Sigma 50/1.4 Art is too big and too heavy for me (and too expensive), the Lumix 50/1.8 also too big and the Sigma 45/2.8 is with F2.8 in some situations too difficult to seperate the background