The Samovar
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: watermarks
lam
Czarist
**




Posts: 30
Registered: 11/2/2002
Member Is Offline

Mood: No Mood.

[*] posted on 4/12/2006 at 02:44
watermarks


who knows how to make watermarks visible, using scanner and "Photoshop" program?
welcome any input
View user's profile View All Posts By User
jlechtanski
Moderator
******




Posts: 640
Registered: 7/7/2004
Member Is Offline

Mood: No Mood.

[*] posted on 4/12/2006 at 08:23


A very useful web page on scanning stamps including detailed infomation on displaying watermarks:

http://www.pgacon.com/tips_on_scanning.htm
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/12/2006 at 11:40


Outstanding web site. Thanks a million!!!!!!!:)
View user's profile View All Posts By User
ameis33
Major Philatelist
***




Posts: 192
Registered: 3/25/2006
Member Is Offline

Mood: Not bad

[*] posted on 4/12/2006 at 12:23


I just add this link, which is not related to watermarks, but shows a possible application of the scanner to extract overprints. The article makes explicit reference to krakow issue of Poland, but the tricks can be used also with other overprints (the paragraphs software, scanning and enhancements).

http://mysite.verizon.net/mikemelni/Krakow/Supplement/index....

Some scanner also have the possibility to scan diapositives. Scanning a stamp in this mode is equivalent to look it backlight (i don't know if this is the right word... looking the stamp near a light...), and the watermark could be seen even without the use of the fluid (which i don't like to use very much).

And i join Gary with my thank's for the web site...
View user's profile View All Posts By User
jlechtanski
Moderator
******




Posts: 640
Registered: 7/7/2004
Member Is Offline

Mood: No Mood.

[*] posted on 4/12/2006 at 14:47


Diapositive film is used to make slides (as opposed to negative film used to make prints). You view slides with a backlight - absolutely the correct word.

That reminded me of a websight that shows you how to make a "backlighter" to scan slides on a regular scanner. It is simply made from a folded piece of white paper. It could be used to scan watermarks.

http://www.abstractconcreteworks.com/essays/scanning/Backlig...
View user's profile View All Posts By User
lam
Czarist
**




Posts: 30
Registered: 11/2/2002
Member Is Offline

Mood: No Mood.

[*] posted on 4/12/2006 at 16:28


Many thanks!
Both sites looks interesting. I"ll try it and will inform you about results.
The point is, that I got POW WW1 correspondence card, printed on watermarked paper - the first time I met such one. This card was issued by Berezovka POW camp
Thanks again
View user's profile View All Posts By User
jlechtanski
Moderator
******




Posts: 640
Registered: 7/7/2004
Member Is Offline

Mood: No Mood.

[*] posted on 4/13/2006 at 08:07


You may find this Berezovka POW card on eBay useful for comparison.

http://cgi.benl.ebay.be/ws/eBayISAPI.dll?ViewItem&category=3...
View user's profile View All Posts By User
lam
Czarist
**




Posts: 30
Registered: 11/2/2002
Member Is Offline

Mood: No Mood.

[*] posted on 4/13/2006 at 11:14


Not exactly!
I am talking about Formula POW correspondence Cards issueb by POW Camps. This formula Card was issued by Moscow Main Post-Office year 1915.
What about scanning post cards - there is some problem, becaue of theie size, much bigger, them stamp. But I hope, I"l overcome.
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/15/2006 at 16:55


Has anybody tried any of these methods and is willing to post the "before" and "after" pictures?:hair
View user's profile View All Posts By User
lam
Czarist
**




Posts: 30
Registered: 11/2/2002
Member Is Offline

Mood: No Mood.

[*] posted on 4/16/2006 at 07:07


So, let's talk about experiments...
As it was supposed, big size papers (like post cards) can't be scanned, using reflector-diffuser. The idea is, to collect enough light from scanners lamp to give a good portion of light from the back of the card. It works with small stamps, but you can't do it with post cards.
Then I decided to make it according to my grandfather's method: using watermark liquid. I, personally, used white benzine.
Fig.1 scanned as is. Fig.2 - with benzine, white background. Fig.3 - the same, but with black bakground. Fig.3a - like Fig.3, but with Photoshop editing.
Fig.4 - 20cmX15cm post document, scanned with benzine, black background and editted with Photoshop.
Fig.5 - POW card, scanned as is. Fig.5a - as Fig.4
To be honest: all the papers (except POW card) have a well seen watermarks. The POW card has a very light embosed watermark.
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 07:59


Figure 1

Fig1screen.jpg - 43kB
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 08:00


Figure 2

Fig2screen.jpg - 38kB
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 08:00


Figure 3

Fig3screen.jpg - 31kB
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 08:01


Figure 3a

Fig3ascreen.jpg - 67kB
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 08:01


Figure 4

Fig4screen.jpg - 36kB
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 08:02


Figure 4a

Fig4ascreen.jpg - 83kB
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 08:02


Figure 5

Fig5screen.jpg - 57kB
View user's profile View All Posts By User
Gary
Deceased
****




Posts: 1626
Registered: 10/18/2002
Location: USA
Member Is Offline

Mood: No Mood

[*] posted on 4/16/2006 at 08:03


Figure 5a

Fig5ascreen.jpg - 38kB
View user's profile View All Posts By User

  Go To Top

Powered by the Rossica Society
XMB Forum Software © 2001-2017 The XMB Group
[Queries: 17]