Photographyblog tested the new Samyang lens and concluded:
The Samyang AF 35mm f/2.8 FE does have a natural competitor in the form of the almost identical Carl Zeiss Sonnar T* FE 35mm F2.8 ZA lens, which was released along with the very first Sony Alpha E-mount camera back in 2013. The Samyang AF 35mm is significantly cheaper and slightly lighter, while the Sonnar T* FE 35mm additionally offers dust- and moisture-resistantance, includes a lens hood and doesn’t suffer so badly from chromatic aberrations. There really isn’t much else to choose between them, though, so unless you’re prepared to pay handsomely for the Zeiss name and a certain level of weather-proofing, we’d definitely recommend the Samyang AF 35mm f/2.8 FE instead.