On 19 Oct 2004 at 8:53, Raimo K wrote: > Stop laughing. Distortion is not an aberration. By distortion you describe a > situation when e.g. straight lines are not reproduced straight. "Distortion: > Causes image of window frame (for example) to bow out (barrel type) or in > (pincushion type), but does not influence sharpness. Not improved by stopping > down." Lens test glossary, Popular Photography, September 1984.
Like the recent discussion regarding "osmosis" the absolute meaning really depends where you draw your references from. The fact is that Herb mentioned that the lens in question showed signs of distortion in the corners, he could well have substituted the word aberration in that general context but he didn't, it was that simple. Strangely I (and I expect most other listers) still understood and appreciated the point he was making, and that's the point. BTW I'll laugh when I feel Like it :-) 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
