The choice of glasses with such aperture for a full frame is very small, and the price is either 16k or 116k. Perhaps there are better lenses than this, but not many people can afford "better". You can scold anything and find minuses in everything. But here there are pluses on the face - this "half a piece" is a plus. You should not expect him to make you a top photographer, but to help you get great portraits, still lifes, etc. will help)))