Lenstip review of Sigma 150-600 C

I expected the Sigma 150-600 Sport to be as sharp as the 100-400 II, which is not a lot to ask with the ART series outperforming all except the Otus, but after i saw the images at TDP I lost all interest in 3rd party telephotos, so since the Sigma 150-600 C is the lower end, its doomed to perform even worse.
 
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