well, if this is true, and I dont doubt it, then there would be huge reason to get the F version, higher average quality or guaranteed high quality, whichever way you want to look at it.
-- J.C. O'Connell (mailto:hifis...@gate.net) Join the CD PLAYER & DISC Discussions : http://tech.groups.yahoo.com/group/cdplayers/ http://launch.groups.yahoo.com/group/cdsound/ -----Original Message----- From: pdml-boun...@pdml.net [mailto:pdml-boun...@pdml.net] On Behalf Of Adam Maas Sent: Saturday, September 12, 2009 8:09 AM To: Pentax-Discuss Mail List Subject: Re: Whats the difference(s) between the 50mm/1.4 F series and FA series lenses? 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<farranth...@gmail.com> 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 <webstertwenty...@gmail.com>: >> 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 <hifis...@gate.net>: >>> >>>> >>>> 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 >> PDML@pdml.net >> 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 > PDML@pdml.net > 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 PDML@pdml.net 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 PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
