The DPP help file lists the lens and body combinations that work with DPP's chromatic aberration correction function, helpfully reproduced by BobAtkins.com at
http://www.bobatkins.com …digital/canon_dpp_32.html
. You'll note that it lists only a selection of Canon lenses (such as the EF-S 18-55mm f/3.5-5.6, where this function is a great help), so the function is, for example, unavailable for pictures taken with my Canon EF 50mm f/1.8 II, and Tamron 55-200mm f/4-5.6.
However, I discovered today that it is available with the Tamron 17-50mm f/2.8! I jest not --- see the attached screenshot. Can anyone corroborate this? Are there any other unlisted lenses for which DPP is willing to make the CA correction function available?

