● Improved AF performance in the peripheral areas in the image, when the "Lock on AF" function is selected.
● Improved feeling of the MF operation of the lens.
自己是用NEXf3 拉風箱情形好像有好一點....
https://www.sigma-global.com/en/download/lenses/firmware/popups/c_30_14/
沒爬文…sorry
