Well...what do you think. I think it's just too much CA (purple fringing). They are taken with Nikon D50 and the Sigma 18-50 f.2.8 Macro HSM
http://web.comhem.se/spacedebree2/DSC_4426.jpg
http://web.comhem.se/spacedebree2/DSC_4437.jpg
http://web.comhem.se/spacedebree2/DSC_4440.jpg
Regards,
Fredrik