Excellent lens. Period. Some issues but nothing that's clearly negative. I got that and Rock 35 for the same price as Voight. I've seen comparisons on YouTube and my own eyeball tells me it's wide open as hell. Made a horror movie and used it 95% of the time. If I had to choose one lens it would be 18-35 sigma and there would probably be 2 of 30 sigma.
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