Re: Nikon Acknowleges Banding, Sort Of

[rafe.bustin@xxxxxxxxxxx]

[rafe b:]
> > The writeup claims that the "fix" is needed only in very
> > special circumstances.  Let's be generous and call that a half-truth.
> > It is a rare occurrence, but I fail to see a correlation with image
> > quality (as the writeup suggests.)


[dickbo:]
> Why do you say that. Have you tried it out?


Well, yes, in fact.  I'm not questioning whether the fix works.
It does.  The question is, when is it needed?

The Nikon FAQ suggests that banding occurs in images with 
difficult tonality, where extreme measures are taken (in the 
scanner driver) to fix the image using curves.

This simply doesn't jibe with my experience, or to Lawrence 
Smith's experince.  What I'm saying is that the images that 
showed banding were remarkably normal.

What the images do have in common is large expanses of 
featureless image area (eg., cloudless blue sky) -- exactly 
what you'd need to detect subtle banding.

What I'm suggesting is that there is a subtle, intermittent 
problem -- maybe mechnical, maybe electrical, maybe 
thermally-related.  But I'm not at all convinced that the 
image content is a contributing factor.



rafe b.

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