Gorgeous glass! I would advise you to take 1.4D, since it will not be inferior in quality, but even surpass 1.4 1.4D autofocus is noticeably faster, one might even say lightning fast, which cannot be said about 1.4G, whose autofocus is basically accurate, the picture changes - 1.4D is not suitable for full frame, the loss of sharpness in the corners cannot be compared with what we get at 1.4G, this is a huge pleasure, all the frames are like from the cover, juicy, contrasting, the glass is light and compact, it is also applicable to the full frame, it is able to draw any plot - be it landscape or portrait, shooting against the sun or at dusk, it always helps out, at any time of the day or night, comparing 1.4G with 1.4D: And here are the portraits on 1.4G: There you can find other tests of this glass.