Refer to: http://kmp.bdimitrov.de/lenses/zooms/_non-SMC/index.html
Note there is no "SMC" prefix. They may be optically the same. Alan C John Francis wrote: Are you sure you meant to put that qualifier there? AFAIK the F line (effectively the first auto-focus series) had multi-coating, just like the earlier M and A lenses, and the subsequent FA lenses. The difference between the F and the FA lenses is mostly in the information that is transmitted over the digital signal pin; while the exact details escape me now I think it might be that the FA lenses also tell the camera the focus distance the lens is set to, which allows for more complex exposure metering. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
