> 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? John ---------- Original Message ----------- From: "Rob Studdert" <[EMAIL PROTECTED]> To: [email protected] Sent: Tue, 04 Jan 2005 08:48:24 +1000 Subject: Re: PESO" New Year's Day Walkaround > On 3 Jan 2005 at 14:27, John Whittingham wrote: > > > On close inspection of the image there appears to be very little if any > > colour fringing of the in focus image, suggesting that CA is not the culprit. > > > > I used to get a little CA on images taken with a 'K' 300 f4 of Superbike > > racing in the UK, now completely abscent using a Sigma 300 f4 APO even with a > > 1.4x EX TC attached. > > 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. > > 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 -------
