On Nov 14, 2006, at 7:19 AM, Tim Øsleby wrote: > The practical difference between CA and fringing is unclear too me. > When > looking at a photo I'm not able to distinguish between the two. So > far I've > been happy being an ignorant ;-)
Hopefully my post in another thread will make this clearer for you. > I've seen many reports indicating that CA is worse with DSLRs. > Therefore I > have assumed that it also depends on the technique involved in the > digitalisation. Am I wrong about that? Digital sensors, due to their sensitivity to the incident angle of light striking them, tend to exaggerate off-axis Chromatic Aberration to some degree: light diffracts around the edges of photosite wells and through the edges of the microlens array when it is incident at angles deviating from orthogonal. It is an effect greater or lesser depending upon the particular match of a given lens with a specific digital sensor imaging system. Godfrey -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
