Here below is a 24 shift test shot, the bright water reflection area does
not have similar problem like the 90/2 and 180/2.8.
Cropped from a vertical shot, scanned at 3000dpi with Nikon 4000ED.
http://www.accura.com.hk/24S_05.jpg
BTW, the 180/2.8 test shots were focused on the water reflections.
C.H.Ling
----- Original Message -----
From: "Parzival Herzog" <parzp@xxxxxxx>
>
> It may not be the lens: The highlights seem to be from highly curved
> transparent surfaces (water), where a combination of dielectric reflection
> and refraction (into the water) is taking place. Since the reflection and
> refraction are dependent of the index of refraction, they will spectrally
> disperse the incident light, and the image may simply be showing this
> dispersion.
>
> To see chromatic aberration caused by the lens, it is better to look at
> in-focus, high contrast edges in a non-specular image.
>
> --
> Parzival Herzog
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