On Mon, Jun 09, 2008 at 12:37:24PM -0700, gldnbearz wrote: > Can someone educate me on the SDM enabled lenses? Am I correct in > understanding that the AF is engaged only if you use the lens with an > SDM enabled body? Otherwise the lens if MF only?
No. Some of the SDM lenses (the DA* 16-50 and 50-135, at least) also have screwdriver AF, so they will work with older AF bodies. I can use my 16-50 on my *ist-D, and could use it on my PZ-1p (with vignetting). The only SDM lens I know of that is SDM-only (thus requiring a K10D, K20D or K200D) is the 17-70 lens. Note that that actually has "SDM" in the name of the lens. I assume many (if not all) new lenses will be SDM-only. > SO is a bad influence/enabler... I'm being "encouraged" to upgrade > from the istDS to a K200 +/- 50-135 lens, so I'm checking to see what > ramifications might be. Not that I *need* the 50-135 when I have the > really nice 16-45 and just got the 50-200 this month. > > Pat, lurker > > -- > 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. -- 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.
