This lens is much sharper and has less chromatic aberration than my Canon 16-35mm lens on my BMPC4K. It's also about what a full-frame 14mm lens will be on an APS sensor, so at 16mm this lens is slightly wider than Canon's 16-35mm L lens. If you are looking for an APS lens equivalent to a 16mm full frame, I would recommend the Rokinon 10mm APS lens.
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