I have the Sigma EX 70-200 F2.8. Everyone who has it regards it as a very sharp lens, for much less than Pentax's offering in this category. Check Photodo.
There is a new, digital version, with some closer focusing capability. I don't know yet whether it is available in Pentax mount. The one I have, though, is so heavy that I no longer carry it with me when I travel. Joe -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
