gray scale photos

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Linea Recta

What's the best way to scan gray scale photo's for archiving? Gray scale or
colour? I believe gray has only 255 shades?



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regards,

|\ /|
| \/ |@rk
\../
\/os
 
What's the best way to scan gray scale photo's for archiving? Gray scale
or
colour? I believe gray has only 255 shades?
Click to expand...

8 bit RGB only had 256 shades of gray and grayscale is 1/3 the size.
 
What's the best way to scan gray scale photo's for archiving? Gray scale or
colour? I believe gray has only 255 shades?
Click to expand...

That depends on your purpose.

If you want to represent the image contents only, you scan it in
greyscale, optimize the distribution of the greylevels (black and
white points, distribution curve) in the scanning software and save
the result as lossless compressed eight bit PNG.

If you want to save artistic effects or the condition of the image the
day when you decided to stop aging and decay, you should scan it as
color image - following all rules for archiving color images.

Michael
 
IMHO:

I red this tip somewhere:
For best result of convwerting color to B/W or grayscale first scan like
normal color RGB. Then convert it in LAB color model. After this just delete
channels "a" and "b" - you need only channel "L" for true Grayscale image!

I tried this and this give me better results than automate "convert to
grayscale" option...

Good luck!
 
Xalinai said:
That depends on your purpose.

If you want to represent the image contents only, you scan it in
greyscale, optimize the distribution of the greylevels (black and
white points, distribution curve) in the scanning software and save
the result as lossless compressed eight bit PNG.

If you want to save artistic effects or the condition of the image the
day when you decided to stop aging and decay, you should scan it as
color image - following all rules for archiving color images.
Click to expand...

It would be ideal to recreate the (old) images the way they looked 80 years
ago. I'll investigate into all the processing later, but I start my work by
scanning....... in colour mode!



--
regards,

|\ /|
| \/ |@rk
\../
\/os
 
Yes, nice site, but I couldn't quite find an answer to my specific question.


--
regards,

|\ /|
| \/ |@rk
\../
\/os
 
Right, I'll start scanning al b&W's in colour, (and also the colour
photo's).


--
regards,

|\ /|
| \/ |@rk
\../
\/os
 
Yes, nice site, but I couldn't quite find an answer to my specific
question.


Fuera de tema, acaso hablas español? Por lo de "Linea Recta"

Saludos

Antonio
 
I'm afraid I 'only' speak Dutch, English, French, German and Latin...


--
regards,

|\ /|
| \/ |@rk
\../
\/os
 
I'm afraid I 'only' speak Dutch, English, French, German and Latin...
Click to expand...

Afraid of what??

Wonder why the "Linea Recta" nickname, but anyway, welcome to the NG.

Antonio
 
A Soberon said:
Afraid of what??

Wonder why the "Linea Recta" nickname, but anyway, welcome to the NG.
Click to expand...

It's Latin for straight (line). Straightforward way of reasoning as opposed
to twisted.


--
Welcome too :-)



|\ /|
| \/ |@rk
\../
\/os
 
Linea Recta said:
What's the best way to scan gray scale photo's for archiving? Gray scale or
colour? I believe gray has only 255 shades?
Click to expand...

For me: Vuescan raw files, in 48 bit rgb.
 
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