T-mounts have a male thread of 42mm by 0.75mm thead pitch, M42 lenses have a 42mm by 1.0mm pitch. Don't attempt to fit a T-mount lens onto a M42 body or M42 adapter directly. You need to use the correct Tmount adapter with T mount lenses
-- J.C. O'Connell (mailto:[email protected]) Join the CD PLAYER & DISC Discussions : http://tech.groups.yahoo.com/group/cdplayers/ http://launch.groups.yahoo.com/group/cdsound/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of P. J. Alling Sent: Friday, June 25, 2010 3:20 PM To: Pentax-Discuss Mail List Subject: Re: T mount lens adapters - a question. Yes. You won't get any more automation, (T mounts are basically just machined metal), but if you're using K mount lenses it's more convenient. If it's your only K mount lens it will be less so. On 6/25/2010 8:57 AM, Malcolm Smith wrote: > The great benefit of sticking with Pentax for me has been the > continued use of M42 screw thread lenses. I use them with a small > Pentax K ring to M42 thread in both my film and digital SLRs. I've > recently acquired for a very small sum a 200mm M42 lens that has a T > mount attached to it. As it still has a screw thread, it works > perfectly with the usual mount. Is the real purpose of this mount so > that you can fit a K mount to it as a permanent fixture, and then use > it as you would any other K mount lens? > > Malcolm > > > -- {\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fnil\fcharset0 Courier New;}} \viewkind4\uc1\pard\f0\fs20 I've just upgraded to Thunderbird 3.0 and the interface subtly weird.\par } -- 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. -- 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.
