Opticallimits

Not quite as good as the 35

https://www.opticallimits.com/sonyalphaf...ang50f14fe

I thought 50mm lenses are not hard to design by now. I am surprised such big lens will need f5.6 to perform well.
Correction needed: "shart corners at f/1.4 or f/2".

Yeah, this and the "spent some effort into the design" - shouldn't it be "put some effort into..." or "spent some efforts designing..." I can tell you were upset Klaus, since even the near center performance is on an unprecedented (low) level at f/1.4... I would've expected this level of suckage from the Canon EF 50/1.2 lens which is a known soap machine but not from a modern lens designed from scratch. Sony/Zeiss 55/1.8 all the way over this, for sure.