On 18/04/07, Pawel Bartuzi <[EMAIL PROTECTED]> wrote: > I wonder whether thorough cleaning of the lens done by a professional > does improve such lens performance by a significant margin? Does it > raise or lower the lens value? What is your opinion, your experience?
Generally the dust only settles in the cavity where t4eh aperture resides so it's not a particularly complex procedure but it's labor intensive. So unless the dust cover is particularly dense and the lens is well used or valuable then it's probably not worth the effort. If it's bad enough it can reduce the contrast as can vapor deposits from old lubricants or plasticizers but it's pretty rare to come across a lens that bad. Cheers, -- Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://home.swiftdsl.com.au/~distudio//publications/ Pentax user since 1986, PDMLer since 1998 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
