So, I'm still confused. Which is the best-the K, M, or A 50mm 1.4???
--- Andre Langevin <[EMAIL PROTECTED]> wrote: > >It appears that Pentax makes both a 50 F1.4 SMC > (52mm filter) and a > >50 F1.4 SMC-M (49mm filter). Which one is better > optically, build, > >etc.? > Steve Pearson > > > >They're identical optically (although the > coatings *may* have been improved > > >in the M version). The SMC 50 f1.4 (52mm filter) > has better build quality. > >Mark Roberts > > >Hmm.... I thought Boz uncovered some sort of hard > evidence that they > >are slightly different? > >William in Utah. > > Indeed, M 50/1.4 is a new design. The lens diagram > for the K and the > M lenses are different but for some reason the M > diagram ended up in > Boz's site as the K diagram. I sent Boz many > diagrams in 1998 so I > may have sent an M diagram for the K one, or Boz > made the mistake of > taking the M one for the K lens. Anyhow, the > confusion persisted for > years until I noticed on the PDML that it was said > repeatedly that > both lenses were the same. In july I found the > origin of this > confusion: > > >Hi Boz, > > > >I have been puzzled for a long time by this > repeated statement that > >Pentax 50mm 1.4 K and M share the same optical > design. I knew it > >wasn't the case. I even wrote to the list once but > nobody took > >note. I recently discovered why: PDMLers believe > in Pope's > >infallibility. > > > >As our K-mount's Pope, I request you to check these > 3 jpegs (and see > >that the optical design presented on site for the K > lens is in fact > >the one for the M lens) and write a papal bull to > rectify the > >erroneous statement. > > > >I know you secretly believe, like most of us, that > all Pentax > >50/1.4s are pagan gods... > > > >Truly yours, > > > >The Hooded Monk > > > >P.S. I still have to scrutinize other pages of The > Site. > > The Pope agreed the give me an audience. > > >Hi Andre, > > > >> As our K-mount's Pope, I request you to check > these 3 jpegs (and see > >> that the optical design presented on site for > the K lens is in fact > >> the one for the M lens) and write a papal bull > to rectify the > >> erroneous statement. > > > >Amen, I have seen the light! I will make the > necessary changes, but it > >will take me another 2 weeks or so. (...) > > > >> P.S. I still have to scrutinize other pages of > The Site. > > > >Study the Pages, my son! This is the only way > towards him... > > > >Halleluja! > Boz > > Then came the Papal bull... > > >Date: Sun, 21 Jul 2002 11:29:38 +0200 > >From: Bojidar Dimitrov <[EMAIL PROTECTED]> > >To: PDML <[EMAIL PROTECTED]> > >Subject: K50/1.4 != M50/1.4 != A50/1.4 > > > >Hi all, > > > >The resolution tests have already confirmed this, > but for some reason we > >were too lazy to really notice it. However, after > careful studying of > >the optical diagrams of the K, M, and A 50/1.4 > lenses, I have come to > >the conclusion, that all three of these emply > different optical > >designs. I have received detailed scans of the > optical diagrams of the > >three lenses, and they are indeed slightly > different. You notice it > >only after you stare at them side by side. > > > >The next KMP update will feature the three optical > diagrams, but the > >imatient ones can take out a few of the "Pentax > Lenses and Accessories" > >booklets and compare. Until now I had simply > assumed that the > >differences (and I HAD seen them) were simply due > to the different > >printing quality of the various booklets. But now > I own a booklet where > >the diagrams of the K and M lenses are one above > the other, and the > >printing quality is the same. The differences are > there. > > > >Thanks to Andre Langevin for pointing this out! > > > >Cheers, > Boz > > Now you have the whole story! > > Andre > > > -- > __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com
