The feel of this lens is simply amazing. Very solid, well made. The design and quality of the materials are top notch. Surprisingly sharp at 1.4. There are practically no chromatic aberrations. The hefty weight is both a plus and a minus, depending on your preferences and shooting conditions. Heavyweight, as I expected, it does not feel. There was no opportunity to compare with the Canon 1.2L, Canon 1.4 was left far behind with no options. One of the authors wrote about the super quality of the Art line. I'm ready to argue with him. Of the three copies that I held in my hands, one had a squealing motor, the second had lenses that somehow strongly jumped and shook the camera, and only the third worked quietly and gently. So, approach the choice of instance responsibly. I'm giving five stars for my copy.
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