I use it in tandem with a Canon EOS 7D mark 2, before that I had a 500D (and yes, they have the same photo quality). Maybe I’m not used to 600 mm yet, maybe for sharp shots you need completely stone hands or on AV constant iso in the region of 6400 and higher, use ultra-short shutter speeds, but that’s just it from a tripod with the stub turned off and with the mirror pre-lifting for some reason then it lathers. And the micro-adjustment of the focus in the carcass did not change the situation. Maybe he just spoiled himself with "Elks", it's like after a Mercedes in a Zhiguli, it seems to be going too, but not like that. In general, I wasn’t very impressed with the quality, giving 60-70 thousand I want more sharpness . (In other words, if you resize 20+ megapixel photos and add sharpness, then the frames turn out to be suitable, and most importantly, such lenses are not taken for a beautiful picture or bokeh, and for shooting something that cannot be captured with a conventional lens, and for these purposes it is great.
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