[filmscanners] Re: Multipass scans

["" <al@greenspace.freeserve.co.uk>]

Rob wrote:

> Anyhow I was wondering whether anyone has seen major benefits from multiple
> pass scanning on the LS30?  I have just tried some 4 pass scans on some
> slides from Japan and there doesn't seem to be any sigificant difference.  I
> suspect that the dense parts of Fuji RDPIII (Provia 100F) are simply too
> dense for the LED light source of the Nikon.

Multipassing will reduce noise and, if it is just noise which is hiding the 
detail, that
would improve the shadow detail.  How about trying Vuescan's long exposure 
option
instead?  Because of the increased exposure time for the shadow pass, that 
should bring
out more detail.  The only problem might be the transitions between the light 
and dark
areas.  I know different scanners behave differently with the long exposure 
option but I
can't remember whether the LS30 produces good results or not.



Al Bond

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