Re: Nikon 8000 fluid mount 120 glass carrier

["Dave King" <kingphoto@xxxxxxxxxxxxxx>]

Please do post an image somewhere Ernst.  It's a bit difficult to follow all
the descriptions, and I'm very curious to see your brainstorm.  Perhaps you
could even sell this on the aftermarket, I'd guess this scanner will be
around in some numbers for quite awhile.

Dave

----- Original Message -----
From: "Ernst Dinkla" <E.Dinkla@chello.nl>
To: <scan@leben.com>
Sent: Thursday, May 16, 2002 7:36 AM
Subject: Nikon 8000 fluid mount 120 glass carrier


> First scans with my DIY glass carrier for fluid mounting shows a
> very even sharpness for four 4.4x5.6 negatives. Measured with the
> Nikon itself there is less than 7 units focal difference on the 4
> extreme points of a 57 x 170 mm. A curly 6x9 negative had all the
> grain sharp over the entire field. So far only
> negatives. Have to check whether the glass shows much colour
> shift with a positive. The negative looked a bit too light but no
> abnormal colour shifts if compared to a scan without glass. The 7
> units difference can be reduced to say 3 units as it seems that
> the right side of the carrier is slightly higher than the left
> side. Something that can be taken care with a piece of sandpaper
> on a glass plate. Probably the normal tolerance but why not take
> that out as well.
>
> I based my DIY carrier on a FH-869M 120 slide carrier. Removed
> all that is raised above the plane the slides lay on, made one
> big rectangle window instead of the two (same start of the window
> as the normal glassless carrier), made one code hole extra so the
> scanner thinks it is the normal glassless 120 carrier (actually
> made 3 extra to get five and taped the two other, one never knows
> what other codes Nikon uses now or in the future). Filled the
> rest of the surface with 5 mm thick black expanded pvc sheet
> (Forex, Sintra). The glass is 2 mm float glass that I checked for
> spots etc. Did that partly with the scanner itself with some filt
> pen marks on the glass to get the focus. That is also how I
> checked its planeness before the end assembly. Size of glass 115
> x 285 mm. At the end I still have to add a strip of aluminium so
> the mounting fluid will drip off on a cloth without touching the
> ABS plastic the carrier is made off. Glued the glass with two
> sided adhesive tape + one component polyurethane expanding glue'
> the last is quite solvent resistant so it will not dissolve. I
> also used that to cover the ABS walls of the carrier for the same
> reason. Near the clamps there is some silicone glue to seal that
> part.
> Bended some metal strap strip to two small clamps to clamp the
> transparant polyester foil on the glass
> at one side only so I don't need tape that normally gives a mess.
> When it is really finished I might put an image somewhere on the
> net. It will not have more instructions than what is described
> here. The ones that are handy do not need more, the other ones
> will make a mess of it anyhow.
>
> Ernst


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