[digiKam-users] managing old documents

[Sveinn í Felli]

Not sure it's always allowed to take such old documents outside, plus 
you have much *less control* over the light, compared to an indoor setup.

Agree with Remco, a couple of similar strength lights at 45° could be 
enough.

But controlling the frequency of the lights can be the key to 
eliminating the brownish hue of the paper and at the same time enhance 
the contrast of the text.

Be creative and test; UV-lights, optical filters, long exposures, 
multilayer HDR, etc.

Don't recommend wetting the manuscripts in gasoline as people apparently 
did before the 1920s...

Sveinn í Felli


Þann 7.5.2020 21:45, skrifaði James Orr:
> When other attempts fail, one can often get good results finding diffuse light in the north-side shade of a structure. A taller one is generally better. The shade does nothing at all for the wind.
> James M. Orr
> ________________________________
> 
> 2705 E Sussex Way
> 
> Fresno CA 93726
> 
> I sincerely wish each of you, your family, friends, contacts, community the best of health in these times of pestilence and disease. There is no foreseeable end to proximity-distancing, and with that a concomitant need for social glue.
> 
> ________________________________
> ________________________________
> On 5/6/2020 8:15 AM, jdd at dodin.org<mailto:jdd at dodin.org> wrote:
> Le 06/05/2020 à 16:23, leoutation at gmx.fr<mailto:leoutation at gmx.fr> a écrit :
> 
> You don't need clouds to get diffused light, with no shadows.
> Shot outdoor, under a tree,
> 
> under a tree is the worst, ray of shadows all the time :-(
> 
>   under anything to protect from direct sun
> spot light. Best result when shooting under a white sheet in a sunny day
> 
> yep, but difficult to manage the shadows, there a always some light rays
> 
> I even have some glasses pretending being anti-glare but not good :-(
> 
> thanks
> jdd
> 
> 
>