have you tried this lens with a bellows instead of tubes? I have used the bellows takumar and many other bellows lenses from 80mm to 150mm on digital with zero problems whatsoever. The tubes may be causing those reflections... jco
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Rapp Sent: Saturday, April 28, 2007 1:52 AM To: Pentax-Discuss Mail List Subject: M42 adaptor and the K10D I have been testing some of my lenses on the K10D and got around to testing the 100 mm f4 bellows with extension tubes and helicoid. Unfortunately the bellows Takumar is not compatible with the digital sensor as there is centre is over exposed due to lens reflections:-( One thing I did notice was how easily the Pentax M42 installed into the K10D body. Since there is no aperatue simulator, it is much easier to install - Thank you Mr Pentax! :-) Bob -- 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

