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 ;-)
I've seen many reports indicating that Ca is worse with DSRL. Therefore I have assumed that it also depends on the technique involved in the digitalisation. Am I wrong about that? Tim Mostly harmless (just plain Norwegian) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Digital Image Studio Sent: 13. november 2006 22:24 To: Pentax-Discuss Mail List Subject: Re: K10D & GX-10 (Samsung) samples On 14/11/06, Tim Øsleby <[EMAIL PROTECTED]> wrote: > Me too is puzzled by the fringe/CA. > Especially I'm amazed by the brick wall images. That's not a high contrast > motif. I can't see why there should be CA there. Is it because of a lemon > 16-45 sample, or are they in some kind of serious trouble? I know this is > just samples from a preproduction camera, but I can't help wondering... CA should be independent of image contrast as it's a function of the lens. In essence CA occurs because the colours are split due to slightly differing magnification ratios across the colour spectrum. CA may exacerbate purple fringing (bloom) caused by high contrast and over-saturation of the sensor but they are essentially independent issues. -- Rob Studdert HURSTVILLE AUSTRALIA Tel +61-2-9554-4110 UTC(GMT) +10 Hours [EMAIL PROTECTED] http://home.swiftdsl.com.au/~distudio//publications/ Pentax user since 1986, PDMLer since 1998 -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
