On 24/08/06, Paul Stenquist <[EMAIL PROTECTED]> wrote: > Excellent. look forward to seeing the results. I'll have to see how > much displacement my barrel shows when I have time. I know there is > some. The 12-24, on the other hand, doesn't extend very far and shows > virtually no movement. It's apparently a completely different design.
I made some quick and dirty comparisons between my DA16-45/4, A20/2.8 and A24/2.8 on Friday, the DA isn't as bad as I recalled but it does have some strange characteristics that I'm at odds with. Sharpness wise the DA seems a pretty competent performer however it does also exhibit purple/green CA which on the skyline is a lot more noticeable than either of the primes at any aperture (though the A24 exhibits some red/green CA). The DA also exhibits a strange tendency to stretch the corners of the frame far more than the fixed lenses (the fixed lenses do tend towards some barrel distortion but not significantly). In any case since I have little spare time at the moment I've made the test image files available as full res jpgs in a 24MB zip file at: http://home.exetel.com.au/loveday/DAZoomTest.zip Many thanks for the web space Peter. -- 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 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
