Yes they are. They are expensive though and you're required to disable Pentax SR (quite obvious).
I dunno their optical performance though. http://www.pentaxforums.com/userreviews/Sigma-18-250mm-F3.5-6.3-DC-OS-HSM-for-Pentax.html http://www.sigmaphoto.com/shop/multipurpose-zoom-lenses 2010/9/4, John Sessoms <[email protected]>: > From: Thibouille >> Mmm what about newer Sigma 18-200 and 18-250 with IS built-in? >> Those are maybe better ? >> > > Are they available with in lens IS for Pentax or Sony mounts? > > -- > 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. > -- Thibault Massart aka Thibouille/Thibs ---------------------- Photo: K-7, Sigma 28/1.8 macro, FA50/1.4, DA40Ltd, K30/2.8, DA16-45, DA50-135, DA50-200, 360FGZ ... Laptop: Macbook 13" Unibody SnowLeo/Win7 Programing: Delphi 2009 -- 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.
