Prime Test Canon CN-E Digital Cinema Lens 50mm T 1.3 Zeiss CP Compact Prime Super Speed 50mm T 1.5 Nikon Nikkor AI-S AI 50mm T 1.4 Canon EF USM 50mm T 1.4 Walimex Pro 50mm T 1.5 On a Blackmagic 4K with X-Rite ColorChecker Passport Testing: Focus, Grid, Color, Focus way, followfocus, See Test Video h...