On the Pentax usa website it is mentioned that the two new weather sealed
lenses ("smc PENTAX-DA* 16-50mm F2.8 ED AL[IF]SDM" and "smc PENTAX-DA*
50-135mm F2.8 ED [IF]SDM") have built-in super sonic focusing motors.But there's no mentioneing of what SDM stands for. This has probably been mentioned or explained earlier on this list, but I failed to read about it. It is also mentioned that teh automatic switch between the two AF systems requires a firmware upgrade for the K10D. Which firmware version might that be? The Pentax website says: " These PENTAX-DA* series lenses feature a tightly sealed, weather-resistant and dust-resistant construction to enhance durability for use in rain or dusty conditions making each a perfect companion for the weather-sealed PENTAX K10D digital SLR. The lenses also feature the PENTAX original Quick-Shift Focus System for instant switching to manual-focus operation and PENTAX-original SP (Super Protect) coating to repel dust, water and grease. A new SDM system has been incorporated for smoother, quieter autofocusing operation using a built-in supersonic motor. These lenses feature the PENTAX KAF2 mount, which incorporates additional electrical contacts to drive a built-in supersonic motor used in autofocusing operation. Both models will be featured along with the entire line of PENTAX digital compact and SLR cameras and lenses in Booth G151 at PMA 2007 in Las Vegas, Nevada from March 8 – 11, 2007. The smc PENTAX-DA* 16-50mm F2.8 ED AL[IF]SDM will ship in Spring 2007 priced at US $899.95. The smc PENTAX-DA* 50-135mm F2.8 ED [IF]SDM will ship at the same time for US $999.95" http://www.pentaxtech.com/Press/Lens/21650_DA_Star_16-50mm.jpg http://www.pentaxtech.com/Press/Lens/21660_DA_Star_50-135mm.jpg Regards Jens Bladt Latest photographs: http://flickr.com/photos/bladt/ http://www.jensbladt.dk +45 56 63 77 11 +45 23 43 85 77 Skype: jensbladt248 - -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.446 / Virus Database: 268.18.4/705 - Release Date: 02/27/2007 15:24 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
