My FA70-200/4-5.6, the power zoom one for the PZ-1, had a wobbly front element. It drove me nuts, but never seemed to affect image quality. It was/is a good lens. Regards, Bob S.
On Sat, Nov 17, 2012 at 3:41 PM, Joseph McAllister <[email protected]> wrote: > Loose barrels on AF lenses have been discussed since the "F" days. I first > heard of it (and noticed on mine) in the "FA" era with my PZ-1p. Supposed to > have no impact on image quality. The official reason for this is the AF > motors did not have the power to focus a lens against the drag of what used > to be tight brass on brass movement. The very thing we loved about the older > lenses, the silky smooth focusing movement, had to go for AF to work. > > > On Nov 15, 2012, at 08:51 , Larry Colen wrote: > >> I was cleaning my 16-50 this morning and noticed an odd clicking. It turns >> out that the front element, actually the whole barrel that the front element >> is in, will rock back and forth a small, but noticeable amount. Is this >> normal? Does this happen with other people's lenses? I'm going to hope that >> since there isn't usually lateral pressure on it that it pretty much stays >> centered. > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
