Extremely useful lens due to its range and brightness, I have had it for 1 1/2 years, I wouldn't spend more money to buy the new one with stabilizer, I don't miss it at all (which has more vignetting and is bigger and slightly heavier). The slight vignetting it has at very wide apertures can be easily corrected with one command in Adobe Camera Raw. Great sharpness in the center, it slightly deteriorates at the edges for the amount of money it costs, I expected it to be better.
Its major drawback for me is that it is quite cumbersome due to its size and weight, especially because of its design, the weight center of the lens is too far forward, resulting in it being very tiring whether you hold the camera or have it hanging around your neck. Imagine that my Nikon 14-24 2.8 is much more convenient to hold, even though it is 100g heavier.
Due to its range and fast focusing, it is ideal for professionals on the go (reportage, sports, etc.), I wouldn't recommend it to amateurs. For example, comparing it to the Nikon 50mm 1.4 in terms of image quality and color, the 50mm lens is significantly better. I would recommend prime lenses to amateurs who are passionate about image quality.