Samyang's new compact AF 75mm F1.8 FE lens has a neat little trick up its sleeve

Samyang (also branded as Rokinon and Bower in other markets), has released its new AF 75mm F1.8 FE lens for full-frame Sony camera systems. Aside from the rather unusual focal length (I think we can all appreciate the decision not to add yet another 85mm FE lens to the market), the lens has another interesting feature. On the barrel of the lens, Samyang has included a 'Custom' switch that will turn the ring on the barrel from a focus ring (Mode 1) to an aperture ring (Mode 2). It's not a dedicat...