I have same question, sharp edges but not aliased.
I noticed using area works great but the render does not look realistic. when edges are sharpened it really enhances the realism of the render but this leads to aliased edges.
this is the render setting file i'm currently using, scene is a architectural model rendered with an alpha background and matte floor to catch transparent shadows.
https://mega.co.nz/#!bcNCiarJ!PctlUNgCFOQpIe7a_MQa9rFylp3s8KcXkBRnRl7ow3E
Any advice or tips would be greatly appreciated!
