Re: Nikon Coolscan 3 Driver

In message <6513a8b24d.Dave@xxxxxxxxxxxxxxxxxxxxx>
David S Lawson <DAVIDsLAWSON@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> I am in the process of archiving my old monochrome negatives using a
> Nikon Coolscan 3 and it appears that the Twain driver need some
> tweeking. Dabid Pilling suggests I post here to seek assistance.
> It appears that the scanner is unable to cope with the contrast ratio
> I am asking for and I am sure it should be able to do better. the best
> I can do is to set both contract and brightness to -5 as a default and
> use gamma to adjust the picture exposure. Some of the more
> "interesting" negatives need further adjustment of contrast and
> brightness but most do not.
> The main fault I am seeing is a solerisation effect in highlight
> areas, mainly sky, with areas of total burnout. I am aware that film
> can give a higher contrast ratio than the scanner can handle but it
> should do better than I am getting
>
> Does anyone have any information to help me fine turn the driver as it
> seems not to work as well as I am expecting.
>
> If it is of any relevance to my problems I am using a Risc PC with OS
> v4.02, Twain v2.2 and DPlngScan v1.18.
> I would be very grateful for any advice available.
> The freeserve address I am showing is old and defunct but is used to
> keep any system needing one happy but you cannot reply to it.

I had exactly the same problem with a Canon FS2710 film scanner and Twain
driver. I solved it by buying a x2 neutral density filter and placing it
inside the scanner (well out of focus). This reduces the highlights to a
level the scanner can handle. It needs to be removed on the rare occasions I
scan negatives.

--
Alan Adams
alan.adams@xxxxxxxxxxxxxxxxxxxxxxxxxxx
http://www.nckc.org.uk/
.

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