Archived posting to the Leica Users Group, 2000/02/13
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 5:03 PM +0100 2/13/00, dominique pellissier wrote: >----- Original Message ----- >From: Pascal <cyberdog@attglobal.net> >To: LUG <leica-users@mejac.palo-alto.ca.us> >Sent: Saturday, February 12, 2000 6:58 PM >Subject: [Leica] Apo-Summicron-M 90/2.0 ASPH tested by CDI > > >> CDI latest issue (221 Feb) has a test of the Apo-Summicron-M 90/2.0 ASPH. >> The lens obtains 5 stars for quality, 2 for price/performance and 2 for >> "cote d'amour" (= subjective likening of the lens). >> Compared to its predecessor, the quality differences are as follows: >> - better in the field wide open >> - a little bit better in the field at 2.8 >> - better in the center at 4.0 >> - almost identical at 5.6 and 8 >> >> My conclusion: don't throw away your "old" lens (it got 4 stars at the >> time). >> CDI reminds us of the inherent deficiences of a lens of such focal length >> on an M body (small viewfinder image, sizeable obstruction of the >> viewfinder by the lens barrel and hood) and puts into question (as always >> with a Leica lens) whether it is worth the money... >> >> Pascal >> NO ARCHIVE >> >################ >On the official Leica site, there are some MTF tests. >If you see the test of the apo90, there is no doubt : at full aperture, this >lens is not an absolute winner. > >Conclusion : don't buy the apo90 if you have the old90. Do you have both? I do. The new 90 is a _LOT_ better (sharper, contrastier, less vignetting, etc.) than the old one at f/2 to f/4. In fact, the new one is still better at f/2 than the old one is at f/5.6, although there the difference is minimal. If the MTF charts corroborate this, fine; if they don't, fine as well. That's the result on film for me. * Henning J. Wulff /|\ Wulff Photography & Design /###\ mailto:henningw@archiphoto.com |[ ]| http://www.archiphoto.com