Great lens. At one time I bought a sigma 120-400 because. eaten toad. Well, then I strangled her and bought the same Canon. If we compare sigma with kenon, then sigma has a more convenient handle. Sigma is much heavier . After sigma - a device with 100-400 weighs like a feather. As far as image quality is concerned, not everything is clear. I myself am a Crimean, the daughter of an officer. but, ugh, sorry, the latest events inspired me =) Well, in a sense - I also really like the picture from the sigma. They are just different. Kenon will be 400 mm sharper, that's a fact. Draws beautifully. The lens is worth its money. I left both lenses.
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