gwilliams6 wrote:
First of all let me correct you, the new Sony 35mm f1.4 GM is NOT a Zeiss lens. It is a Sony GM lens and none of Sony GM lenses are Zeiss lenses. GM lenses are wholly designed and made by Sony. Early Sony-Zeiss collaborations had Zeiss help Sony design some of their first fullframe mirrorless lenses, but Sony and Zeiss make no new lenses in collaboration anymore. So while you can still buy some Sony-Zeiss lenses, there are no new ones from that collaboration.
This is correct. The older Sony/Zeiss Distagon 35mm f/1.4 ZA still is a fine lens. However, the new Sony 35mm f/1.4 GM is setting a new standard for 35mm. I would pick the GM over the Sony Zeiss or the Sigma.