The Sigma 16mm and 23mm f/1.4 lenses for RF mount now have an official sale date The key advantage of opening up the mount to third-party optics? Price. Canon’s APS-C cameras are designed to be more ...

Earlier this year we reported that Canon had given Sigma the green light to manufacture a series of APS-C Canon RF lenses, a sign that Canon was easing its stranglehold on the RF mount. In recent ...