I think these two lenses are better for portraits than the 50mm f1.8. The 50 is sharp, but I think the bokeh is not very pleasing. The bokeh on the 85 and 135 is very smooth, so the separation between the person and the background is more pleasing. 135 is a little long on the 10D so you do have to stand a little further from your subject. From what i've heard and from what photo-john says the 50 f1.4 is a nice option too. Good luck.



Ivan