Simon, any lenses you purchase for the K100 MUST have the Pentax K-mount. The Konica AR mount definatelt will not fit. The Vivitar might, only if it is the PK mount. Whenever you look on the internet, make sure the lens is specified to be for the Pentax K mount cameras. Hope you enjoy the camera!
Walt -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
