On 21 Apr 2005 at 22:38, Paul Stenquist wrote: > Just the other day you were commenting on sharpness differences on lens > tests by Jostein. And Sanderson's tests showed obvious differences. I > rarely test but even in my day to day work I can see, for example, a > difference in sharpness between the DA 16-45 and the FA 28-105 shooting > both at about 35mm.
I was actually far more interested in edge performance (CA) and contrast, sharpness was very difficult to differentiate between the known good lenses (and I've said before the 645 lenses are poor performers, Josteins test confirmed this). I have no doubt that you can see the differences between the zooms, I can too, I was speaking in reference to prime lenses and should have said so. I don't own any zooms, none provide quality that's acceptable to me, in fact many lenses that are raved about I have owned then sold being none too impressed with their performance. It's easy to confirm that the combined resolution of the best lenses at their optimum apertures when coupled with the current Pentax DSLRs is no more than around 46lppmm. This isn't particularly high resolution. Cheers, Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://members.ozemail.com.au/~distudio/publications/ Pentax user since 1986, PDMLer since 1998
