the trick there is that once the M42 lens reaches a certain size ( around 300mm or larger ), you dont mount the lens to the camera, you mount the camera to the lens with the M42 screwmounting system. Its not as easy as bayonet mounting but its much easier than trying to screw (rotate) a large lens into a fixed positon M42 body. I have been doing it that way for decades... jco
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Whittingham Sent: Thursday, February 15, 2007 5:18 PM To: Pentax-Discuss Mail List Subject: RE: Well anybody know in what waysm42screwmountingsystemissuperiortoKmounting system? > I shot motorsports with screwmount lenses for many years, and I > changed lenses frequently, sometimes as much as thirty or forty > times during an afternoon of shooting. I remember watching the NIkon > shooters and thinking how much faster they were on the lens swap. > With the screwmount lens, I'd twist out the old one, chich required > five or six turns if memory serves me. Then swapping in the new one, > I really had to look to align it before turning. Then, I cold never > be sure that the threads actally caught on the first turn, so I had > to be careful not to release it before going for the second turn. It > was never easy, and I always envied the bayonet mount guys. Paul Yep, total PITA specially with a 300mm or 400mm lens John ------------------------------------------------------------------------ ---------------------------- The information transmitted is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received an email in error please notify Carmel College on [EMAIL PROTECTED] then delete all copies of it from your systems. Although Carmel College scans incoming and outgoing emails and email attachments for viruses we cannot guarantee a communication to be free of all viruses nor accept any responsibility for viruses. Although Carmel College monitors incoming and outgoing emails for inappropriate content, the college cannot be held responsible for the views or expressions of the author. The views expressed may not necessarily be those of Carmel College and Carmel College cannot be held responsible for any loss or injury resulting from the contents of a message. ------------------------------------------------------------------------ ---------------------------- -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
