On Nov 4, 2010, at 14:03, Subash wrote: > hi, > > anybody have experience with this lens? pretty heavy, a little over > 1.5kg, but i saw one today for sale, it's in almost mint condition and > so badly needs a caring home :) the one i saw today is the one on this > page: > > http://www.pentaxforums.com/lensreviews/Takumar-300mm-F4-1962.html > > i guess what i really want to know is that once mounted with an m42 > adapter, does one use this like a K/M lens with stop-down > metering/green button? would appreciate any input you may have... >
It will be different. The aperture does not get held open, so if you're dialing the lens down to f/11 you'll be looking through a lens which is actually stopped down to f/11. On the bright (ha!) side, metering in Av mode would be real-time with no need for the green button. -Charles -- Charles Robinson - charl...@visi.com Minneapolis, MN http://charles.robinsontwins.org http://www.facebook.com/charles.robinson -- 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.
