35mm F2 DG DN | Contemporary (L-Mount) firmware v1.2

・It introduces compatibility with the “focus ring control” function of the camera, allowing either “linear” or “non-linear” focus movement to be selected when using MF.* SIGMA fp L , SIGMA fp, Panasonic Lumix S1, Lumix S1R, Lumix S1H, Lumix S5, Lumix BS1H, Leica SL2, SL2-S are supported.* SIGMA fp L will be supported by updating to firmware Ver.2.00 scheduled to be released in the near future, and SIGMA fp will be supported by updating to firmware which is scheduled to be released in April.* For more information on linear and non-linear focusing, please refer to our frequently asked questions.・It reduces the AF drive sound.・It optimizes the scale bar display during manual focus.・It improves the phenomenon of an occasional, slightly increased shutter lag during AF shooting when used in combination with the Leica SL2.