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.
New Nikon 18-105mm Vibration Reduction π· Zoom Lens with Auto Focus for Nikon DSLRs
104 Review
Nikon 50mm f/1.8D Lens: Perfect for Nikon DSLR Cameras!
97 Review
Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras
76 Review
Canon EOS SLR Camera Lens EF 24-105mm f/4 L IS USM
124 Review