[filmscanners] Re: Nikon Supercoolscan 5000 ED

["Arthur Entlich" <artistik@shaw.ca>]

Speed.

It can scan 2 or 3 scan lines at the same time, using the same lighting
sequencing and same stepper motor position.  The lines are not necessary
right next to one another, in fact, they probably aren't.

The only problem Nikon has run into with this technique is banding,
since by doing several lines at once, spaced apart, by the time the
adjacent line gets next ti it on one side, the dimensions or position
might have changes due to thermal changes or other factors.  This was a
problem with earlier medium format models, but perhaps it was resolved.

On those models Nikon suggested moving to ultra fine scanning mode which
used only one CCD line, but also slowed the unit down by 1/3rd or so.

Art

lists@lazygranch.com wrote:

> Any ideas why Nikon would need multiline CCDs? The 5000 uses 2 lines,
> and the 9000 uses 3 lines.
>
> Since Nikon doesn't use color masks, you would think a one line CCD
> would be sufficient.
>
>
>>
>
>

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