Recent content by sho

Hello, I just bought a Canon FD 50mm f/3.5 Macro lens + 25mm Extension tube, but as soon as I put the extension tube, everything gets blurred. I tried on 50mm f/1.4, 28mm f/2.8 too, but nothing changes when I pull the focus. (there's nothing wrong with those lenses) It doesn't seem there's a...