The Odd One. Sigma 65mm F2 DG DN Contemporary Review

Even after two calls with my Sigma rep talking about the Sigma 65mm f2 DG DN Contemporary, I still don't totally understand it. It's a weird focal length, which I genuinely love. I think it's great that Sigma is trying brave things. It's also incredibly sharp and has stellar image quality. But using this lens isn't the easiest. Every time I think that I'm going to use it like a 50mm, I need to readjust. And every time I think to use it like a 75mm, I had to step forward a bit. This is in an odd ...