I think some of it is that the FA is getting a rep for poor performance, most likely due to degraded QC of late. I've seen some serious bitching over at FM over the performance of FA50/1.4's produced since the Hoya buyout. Samples were significantly inferior to the FA I had a couple years ago. Thus the F would increase in value as it's less likely to be a crapshoot on performance.
-Adam On Sat, Sep 12, 2009 at 5:32 AM, Anthony Farr<[email protected]> wrote: > When in doubt, consult Boj Dimitrov. The K-mount pages tell me that > the F50/1.4 weighs 230g, while the FA50/1.4 weighs 220g. Considering > that the FA lens also has the addition of the MTF chip, the difference > is probably because polycarbonate has replaced metal in the lens's > construction. 10g reduction seems about right because the metal in > the F would most likely have been aluminium, not brass like Takumars > of old. . > > Thinking about what a fragile metal aluminium is, polycarbonate may > actually be stronger and more impact resistant and not necessarily a > backward step. > > regards, Anthony > > "Of what use is lens and light > to those who lack in mind and sight" > (Anon) > > > > 2009/9/12 P. J. Alling <[email protected]>: >> I have a couple of F lenses, the build seems to be a bit better than my FA >> lenses. Some seem to contain a substantial amount of metal. I don't >> actually have either the FA 50mm f1.4 or the F 50mm f1.4 so I can't say >> that;s the case as far as these lenses are concerned thought most reviews >> mention the FA's plastic construction. >> >> Miserere wrote: >>> >>> 2009/9/10 J.C. O'Connell <[email protected]>: >>> >>>> >>>> Ive noticed lately that the used F50/1.4 lenses are pulling >>>> in high money lately on ebay, even more than the FA version >>>> brand new in some cases. Anybody know what all the differences >>>> are between these two lenses are optically, mechanically, >>>> funcitonally, etc? Maybe its just a collector thingy or >>>> maybe the F version is better in some way?? I have never owned >>>> either one of them. >>>> >>> >>> Doesn't anybody know? I'm curious now :-) >>> >>> >>> --M. >>> >>> >>> >> >> >> -- >> >> >> The free man owns himself. He can damage himself with either eating or >> drinking; he can ruin himself with gambling. If he does he is certainly a >> damn fool, and he might possibly be a damned soul; but if he may not, he is >> not a free man any more than a dog. >> >> --G. K. Chesterton >> >> >> -- >> 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. > -- M. Adam Maas http://www.mawz.ca Explorations of the City Around Us. -- 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.
