Having dipped my toe into the world of shooting people, I have found my current lens set (70-200 excluded) is not up to the task of producing sharp results at open apertures. So I am looking at the 17-40 f/4 L and further down the track, when funds allow, a 24-70 f/2.8 or 50mm prime.
Is the 17-40 useable for portrait work on a crop body? Does any one have some examples of portrait work with the 17-40?