When you focus the lens with split-image rangefinder or by AF the correct infinity setting may be past the engraved setting - or before it. The stop is not to be relied on absolutely but normally the depth-of-field takes care of small errors. And yes, it applies to all settings, not just infinity All the best! Raimo Personal photography homepage at http://www.uusikaupunki.fi/~raikorho
-----Alkuperäinen viesti----- Lähettäjä: Keith Whaley <[EMAIL PROTECTED]> Vastaanottaja: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Päivä: 12. elokuuta 2002 21:20 Aihe: Re: Vs: Infinity Focus problem >Raimo Korhonen wrote: >> >> 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. > >Is that when the ring is rotated against it's stops? >Or whenever it's placed exactly on the infinity mark? > >keith whaley > >> 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: 12. elokuuta 2002 16:22 >> Aihe: Infinity Focus problem >> >> >Hi all, >> > >> >I have a lens that is little off when attempting to focus to >> >infinity--instead of moving the focus all the way to the end, >> >you have to back it off a little. It is only with this one >> >lens and not a problem of the camera with other lenses. >> > >> >Does anyone know what causes this? Does this indicate that >> >the lens does not focus correctly through the whole range or >> >that it is just off at infinity? >> > >> >Screwmount lens, btw. >> > >> >thanks 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 .
