I wouldn't expect much CA at the center of the frame anyway, it usually shows up at the edges and corners. I've never noticed any on the F 70-210, and I've owned two of them. On the other hand I don't go pixel peeping unless there's obvious degradation of a printed image to try to fix the problem.
John Whittingham wrote: > Hi Thibouille > > The Tamron I have shows very little CA even in high contrast situations > (samples if you want them), likewise my friends sample. > > The shot of the Cormorant: > > http://photo.net/photodb/photo?photo_id=7228514&size=lg > > .........is a 100% crop from the centre frame @ f/8 300mm, apparently it > gets better at f/11. I can confirm that it's better than my FA 80-320, F 70- > 210 and the DA 50-200 I had. I haven't tried the DA 55-300 so can't comment, > as for the DA* 300 f/4, well RRP c.£1000 in the UK against <£120. > > Toine was quite impressed with some sample images I sent him, personally > I've never seen a budget consumer zoom perform this well, it's performing > completely out of it's league. It gets better, I bought mine secondhand for > £65 on the strength of the performance of my friends sample, bought new. If > I have a good sample he has the identical twin! > > I'm just expressing my opinion on what I see. > > Regards, > > John > > > On Tue, 6 May 2008 08:37:52 +0200, Thibouille wrote > >> There was a test on DPR I will try to find back comparing DA*300, >> DA55-300 and Tamron 70-300. >> >> DA* is superb of course but the 55-300 holds its own pretty well even >> at 300mm. The Tammy shows sooo much CA it is completely destroyed by >> the DA55-300. >> -- >> Thibault Massart aka Thibouille >> ---------------------- >> Photo: K10D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... >> Thinkpad: X23+UB,X60+UB >> Programing: D7 user (trying out D2007) >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> to UNSUBSCRIBE from the PDML, please visit the link directly above >> and follow the directions. >> > > > ---------------------------------------------------------------------------------------------------- > > The information transmitted is intended only for the person to whom it is > addressed and may contain > confidential and/or privileged material. If you have received an email in > error please notify Carmel College > on [EMAIL PROTECTED] then delete all copies of it from your systems. > > Although Carmel College scans incoming and outgoing emails and email > attachments for viruses we cannot > guarantee a communication to be free of all viruses nor accept any > responsibility for viruses. > > Although Carmel College monitors incoming and outgoing emails for > inappropriate content, the college cannot > be held responsible for the views or expressions of the author. > The views expressed may not necessarily be those of Carmel College and Carmel > College cannot be held > responsible for any loss or injury resulting from the contents of a message. > > ---------------------------------------------------------------------------------------------------- > > > -- Vote for Cthulhu. Why settle for a lesser evil... -- Dr. Jerry Pournelle -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
