Resolved! EOS 5D Mark IV Black Border
Recently purchased an EOS 5D Mark IV. I've only taken a few photos in AV in different Fstop and ISO settings with it using a Canon 50mm 1:1.2 EF lens and a Sigma 18-300mm 1:3.5-6.3 DC Lens. All photos have a black border all around. This didn't h...