Samyang has been known for producing some very good manual lenses, for example the 12mm 1:2.0 NCS and the fabulous 135mm 1:2.0. They recently stepped up their game and released lenses with AF for the Sony E-mount.
The choice of the E-mount seems logical as the number of lenses in comparison to the body sales is still limited.
The first try did not get too much interest, the 50mm 1:1.4 AF was limited by a mediocre AF system. But obviously Samyang learnt their lesson …
The 2nd batch of AF lenses did hit a sweet spot – the provide great performance at very reasonable price. The AF 14mm 1:2.8 is still unique with the angle of view it is offering whereas the AF 35mm 1:1.4 is directly competing with the Sony/Zeiss 35mm 1:1.4 (which is thrice the price). (Add to that the other Samyang 35mm with aperture 2.8 which makes a good small and compact travel companion)
After having used this lens for some weeks my conclusion is that 99% of the users would fare well with the Samyang option. The AF is fast enough (yet not 100% silent) and the optical quality is almost matching the Zeiss offering. What is missing for some is the aperture ring (I would have liked this, too) and the completely silent AF. Personally I would have preferred a smaller minimal aperture than f16.
An interesting development is that Samyang is now offering (similar to Sigma) a Lens Station which enables users to update firmware and change some parameters, e.g. the sensitivity of the focus (by wire) ring in MF mode.