> it seems relative to the distance from the focal > plane like a severe Longitudinal Chromatic Aberration (LCA).
Would this not be evident on all telephoto lenses to some greater or lesser degree? John ---------- Original Message ----------- From: "Rob Studdert" <[EMAIL PROTECTED]> To: [email protected] Sent: Tue, 04 Jan 2005 11:02:54 +1000 Subject: Re: PESO" New Year's Day Walkaround > On 3 Jan 2005 at 23:38, John Whittingham wrote: > > > > Just because CA isn't evident at the plane of focus doesn't mean > > > it's not a form of CA, it's certainly not a bloom artifact in the > > > image under scrutiny. > > > > Where would you suggest the obvious place to look for evidence of CA is then? > > In the image. The CA that is being exhibited in this image is not > the typical linear lateral CA (or transverse chromatic aberration > (TCA)), that is generally discussed and it's not a global distortion > across the image, it seems relative to the distance from the focal > plane like a severe Longitudinal Chromatic Aberration (LCA). > > 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 ------- End of Original Message -------
