Re: [APML] Nikon 600 f/4

[Stephen Pitt <lthuedk@pe.net>]

In the case of Nikon, the colour balance is "weighted" from the start.
Its an eyeball thing.

I have no disagreement with the balance of your post, especially in
the spelliing of your surname [sorry].

Stephen Pitt



Chris1011@aol.com wrote:
> 
> In a message dated 11/8/2001 11:16:48 AM Pacific Standard Time,
> lthuedk@pe.net writes:
> 
> > Though Roland
> > Cristen couldn't find the term in any optics literature doesn't
> > mean
> > the term doesn't exist.
> 
> The term is not applied to optics, rather to the final image that
> you assemble from the detector, be it film or CCD/filters. It is
> here where you introduce weighting to the various colors that result
> in a "color balance".
> 
> >>Its everywhere and it is self-descriptive.
> 
> > Some people, including myself, who have looked through a Takahashi
> >
> > notice a shift in colour balance toward warm yellow and know it
> > wasn't
> > caused by filtration. Or was it?
> 
> In the case of a Tak Fluorite doublet, the reason things look yellow
> or "warm" is because the far blue light is not in focus. It is
> certainly not because the light is filtered out - it is not
> filtered, just not in focus. If you want to understand this further,
> I can Email you two images of Jupiter that show by simulation
> exactly what is happening when all the colors are not focused at the
> same plane.
> 
> Roland Christen

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