[sane-devel] scanner as digital camera back

[fonsspons]

2008/3/19, Jo Dierickx <dierickxjo at gmail.com>:
>
> Readjusted the base story and added intext url to keep them vissible in
> reply's.
>
> Hi,
> I converted my canon lide30 to a digital back for my cambo (
> http://betelgeuse.umeqs.maine.edu/chris/equip.htm ) wideframe
> camera, as in this project( http://golembewski.awardspace.com/index.html).
> You can find some pictures I took here(
> http://picasaweb.google.be/dierickxjo/ScannerProject ).
> I've used this scanner setup with vuescan on vista and xsane on
> ubuntu. As you can see on the examples it has the capability to
> reproduce grate gray scales.
> But, i only get great result in shallow light conditions, and the most
> odd black and white spots appear.
> I don't know jack sh...t about scanners and since i believe its all
> about the more advanced settings i turn myself to what i believe are
> the experts, the back end developers like you all.
>  About grayscales and lightconditions i think it would be a lot better
> to have a scanner that can have its exposure time set. (preferably the
> real exposure since analog gain is going to be difficult cause i
> destroyed the led). Is this true, and does anyone know wich scanners
> support this function?
> About the light and dark spots, i'm very confused. This also apears in
> the area that is not exposed to the light, it even apears when i keep
> the camera closed. And yet is also dependant on the picture.
> Can i start with this explanation and see where this query is taking
> me(us)?
> Thanks
> Jo
>
> 2008/3/19, m. allan noah <kitno455 at gmail.com>:
> >
> >
> > this looks like you are saturating the CIS. normally, the LEDs are
> > modulated for proper exposure, but you cant do that. someone else like
> > the author of the lide30's sane back end would know more.
>
>
> If i can't adjust exposure on the lide30, i could use gray filters on the
> camera itself. Try this out this weekend.
> In the meantime I'm very interested to investigate best suited scanner for
> a second prototype for this particular project. Can anyone indicate me a
> scanner with this possibility?
>
> > I did subscribe to devel... how do i make this visible ?
> >
> >
> > try again- dierickxjo at gmail.com is not subscribed.
>
>
> Fixed this, set my mail to the appropriate mailaccount. My bad.
>
> >
> > > Should i include or delete original messages?
> >
> >
> > comment inline as i am doing now, and trim useless bits.
> >
> > allan
>
>
> Somewhat like this?
>
> --
> >
> > "The truth is an offense, but not a sin"
> >
> >
> > --
> >
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> >
>
>
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