After reading reviews about this glass, I decided to rent it and form my own opinion about it. Took for a week. It's a pity to give =) Many attribute its weight to disadvantages. Me not. The weight of the lens combined with the stub gives a great result. It was possible to take excellent pictures with a shutter speed of 1/8 s. I got used to the lens almost immediately, yes, for the first 15-20 minutes I tried to twist it to change the FR. It lies comfortably in the hand, I reached all the "toggle switches" without looking up from the viewfinder, the pump works easily, but not relaxed. The picture is amazing, from 150 mm bokeh is great. I took only him for shooting. Never failed. But at 250-300 mm I smeared AF a couple of times. In general, on Monday I rent it back and buy food for myself.
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