I could not check your link, but it may just be the bayer pattern ccd giving
color aliasing on
very fine structure detail.
Tim Hughes
--- Wayne Harridge <wayneharridge@xxxxxxxxxxxxxxx> wrote:
>
>
> Does anyone know why closeups of metal have strange rainbow effects?
>
> http://www.danielmitchell.net/sgal/index.php?gallery=./E330/macro2&image=nee
> dle_eye.jpg
>
> has a distinctive pattern of coloured specks on the surface -- it's
> not CCD noise, so is it just diffraction effects or something optical
> like that?
>
>
>
> It doesn't only happen with metal, take a close look at this TOPE image:
>
> http://www.tope.nl/tope_show_entry.php?event=29&pic=8
>
> ...Wayne
>
>
>
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