Samyang is a reputable lens manufacturer known for their well-built manual focus lenses that produced sharp images. When they announced their first AF lens, the 14mm f2.8 and the 50mm f1.4 for Sony E mount. This is a game changer for Samyang as AF is a vital part for a lot of photographers whether shooting events, street photography etc. Being a Sony user, it has opened the doors to having access to some great affordable lenses. Both these lenses are compatible with phase and contrast detect sensors.