Carl Zeiss 85mm f1.4 or 135mm f1.8, two of of the best portraiture lens of all systems!
With the super shallow DOF of such lenses, you will be glad that the A33 and A55 allows u to magnify the image and do micro focusing adjustment thru their EVF! :thumbsup:
No other cameras allows u to do that.
Many people criticizes EVFs, but I for one am glad the DSLTs have such good EVFs, cos this sort of micro adjustments is critical when doing portraiture shots with the above wide aperture lenses, cos the DOF is way too thin, very easy to get OOF. And also its great for macro shots as well