Why a bad lens? I am inspired by the work of Sally Mann (her family series) and so I am looking for a lens (250mm or about 10in) that has a warm feel and maybe even a little distortion thrown in.

Looked on ebay and other sites and I am a little bewildered by the choice out th ere. Any suggestions? Lens can be new (ok they probably don't make them that bad anymore!) or vintage.

Also can you add very old lenses to modern shutters. I want to have the look and feel of the old lens, but use a newer shutter to get a reliable exposure.

Thanks, Camille.