Nah - don´t worry, it IS normal behaviour. Relatively, at least. You focus so that the image is sharp on the screen - period. There might be some wear in the focusing helicoid but start worry only when you cannot get proper focus or pictures are unsharp. All the best! Raimo Personal photography homepage at http://www.uusikaupunki.fi/~raikorho
-----Alkuperäinen viesti----- Lähettäjä: David Weiss <[EMAIL PROTECTED]> Vastaanottaja: P. List <[EMAIL PROTECTED]> Päivä: 13. elokuuta 2002 1:54 Aihe: Re: Infinity Focus problem >Date: Mon, 12 Aug 2002 21:29:44 +0200 >From: "Raimo Korhonen" <[EMAIL PROTECTED]> >Subject: Vs: Infinity Focus problem > >Raimo said: > >No problem - almost all lenses do that, especially longer >lenses - >focus beyond infinity, to take care of the different heat >expansion characteristics of the glasses and barrel materials so that >you get infinity focus whatever the temperature. >All the best! >Raimo > > >Raimo and others, > >Let me relate why I ask this question. I was at a sports >stadium this weekend, focused on a light tower with a 35mm >lens, noticed that with the split screen, that it was not in >focus unless I turned the focusing ring back a bit. Checked >this with 2 other lenses (50 and 105mm), they focused on the >light tower when focus ring was turned as far as it would go. > > >From what others have said, since it is not AF lens or >telephoto lens, than this is not normal behavior. Is it >therefore indicative of a problem with focusing at all >distances or just with infinity or? Surely others have had >lenses that do this! Or am I just that unlucky? Don't >lenses sometime go bad in this way through wear and tear? >What would wear so that this might happen? > >Dave - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
