gldnbearz a écrit : > 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? > > 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. Read the FAQ at! http://www.pentaximaging.com/footer/news_media_article?ArticleId=10527486
/" Q: Will PENTAX be developing SDM-only lenses from now on? A: No: Despite the great advantages of our SDM autofocus systems, we will continue to develop both SDM and body-based focus systems. In fact, different types of lenses have different requirements. For example, our unique Limited lenses are often so compact that there is no space for an SDM autofocus motor. Until time and technology present other options, we will continue to develop both types of autofocus systems. Remark: Current DA* lenses (16-50mm, 50-135mm, 200mm and 300mm) contain both SDM and body-based focusing. While we will continue to develop lenses for each type of autofocus system, we will also phase out lenses that support both types of focusing simultaneously. Due to issues of cost, development timeframe and other factors, in the future, PENTAX lenses will either support SDM focusing or body-based focusing, but not both. "/ -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
