Boris, unless you really need the constant aperture, I recommend that you consider the SMC F 70-210 F4-5.6. At the long end, F5.6 is sharp. It will transmit focal length information to the K10D.
There is always one or two available on eBay. Joe -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
