The good ones are. I specifically qualified that in my post which you edited out. I stated good zooms that hold focus while zooming and there definately are ones that do when properly /assembled aligned. Its the first thing I check when I buy a zoom as a matter of fact. Some do, some dont. jco
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Stenquist Sent: Friday, November 10, 2006 6:44 PM To: Pentax-Discuss Mail List Subject: Re: Using a Super Tak w/ istDS- A challange to the list? On Nov 10, 2006, at 4:44 PM, J. C. O'Connell wrote: > the camera makers > themselves even tell you to focus at longest > setting and then zoom to length you want > because its easier to focus accurately at > longer lengths This is not a good way to work. Most lenses aren't precise enough to hold accurate focus while zooming. -- 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
