Hello Anandtech once more, I am extremely new to photography so if you could bare with me. I purchased a Canon T2i and a Canon Normal EF 50mm f/1.4 USM Autofocus Lens. I had a fair amount of time to learn how the stock lens worked on the camera so I figured the change wouldn't be too drastic (operational wise that is)... I put the new lens on, switched the camera to manual mode and flipped the switch on the lens itself from MF to AF. Taking from what I learned about my previous lens, I held the shutter button half-pressed and to my surprise the lens does not auto-focus. Is this normal? I also tried changing it in the menu settings and it would not let me. Any thoughts for this new photographer? Thanks! Ps: An aside issue: Also, the Aperture is F0.0 and I cannot change it.