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[OM] Re: can your digital do this?

Subject: [OM] Re: can your digital do this?
From: "C.H.Ling" <chling@xxxxxxxxxxxxx>
Date: Thu, 5 Feb 2004 22:41:29 +0800
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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