On 18 Apr 2006 at 2:50, Peter Spiro wrote: > I used to have the M and A versions, and they were both excellent lenses. > There is not really a lot of difference among any of the 50 1.4s. They are > all great lenses, and I don't think you can go wrong with any of them. The > M is that it is the most common and least expensive. The K was only made > for about 3 years, so it is relatively rare. > > I collected old test results from Modern Photography Magazine at > http://ca.geocities.com/spirope/pentlens.html > > According to their tests, the K version had the highest overall resolution, > followed next by the A. Wide open, however, the M appears to have the best > performance.
Hi Peter, It's good to see you back :-) I assume that the results were normalized since in all the testing I've done the M and K series lenses never have quite the contrast of the newer A series glass, so if you apply the resolution tests uniformly the lower contrast will generally yield slightly lower resolution numbers. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http:/home.swiftdsl.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
