RetouchPRO

Go Back   RetouchPRO > Technique > Photo Retouching
Register Blogs FAQ Site Nav Search Today's Posts Mark Forums Read


Photo Retouching "Improving" photos, post-production, correction, etc.

what difference gray or BW and used: 50% contrast

Reply
 
Thread Tools
  #1  
Old 04-30-2010, 01:55 AM
pinee pinee is offline
Junior Member
 
Join Date: Apr 2010
Posts: 4
office document, used Gray or BW, what difference?

here is my step:


first used "Scanner" to scan "Gray" dpi.300 image to "TIFF format.
open [file] photoshop
I can see window title is [filename.tif] [Gray]

Code:
Image (I) >
...Adjust (A) >
.....Auto contrast (Alt+Shirt+Ctrl+L)

and:

Image (I) >
...Mode (M) >
.....Bitmap (B) >
set output(o) 300
method
used: 50% contrast
_click OK
and

Save As , done!


My problem is:
(1) what difference mode "Gray" and "BW"

(2) what mean that "Mode>Bitmap> that "50% contrast" ?
is fixed, no changed that "50%" or
can simple set 10%,20%...80%,90% contrast" ?

(3) that "Mode>Bitmap> that "50% contrast" ,
..... and that "Adjust(A) >High Contrast(T)"
same function? what difference ?

please!


=====

I'm used Windows XP PRO SP2 and Photoshop 7

Last edited by pinee; 05-01-2010 at 01:41 AM.
Reply With Quote top
  #2  
Old 04-30-2010, 04:27 AM
flexmanta's Avatar
flexmanta flexmanta is offline
Senior Member
 
Join Date: Dec 2009
Location: Spain
Posts: 339
Re: what difference gray or BW and used: 50% contr

If i were you, i would not scan in grayscale. You are missing the oportunity of assigning a value to each hue, which is what BW is really all about whether you do it in camera with color filters, or in photoshop.

I believe in photoshop 7 there's no black and white adjustment like we have in the creative suite, so you have to use other tools. You should always scan in color (as you should shoot), and then use the channel mixer to get the BW to look how you want it.
Reply With Quote top
  #3  
Old 05-01-2010, 01:19 AM
pinee pinee is offline
Junior Member
 
Join Date: Apr 2010
Posts: 4
Re: what difference gray or BW and used: 50% contr

thanks, I need doing:

Scan B/W A4 paper document(s), invoice...is NO NEED color. to computer image format (.PDF)

but that letter is very light color AND
that A4 paper is wrinkled.

if direct used "BW" mode to scan, is failed. I can't see that letter,
used "Gray" maybe see, but need adjuest that "Adjust(A) >High Contrast(T)"

any best way to handle!

Last edited by pinee; 05-01-2010 at 01:32 AM.
Reply With Quote top
  #4  
Old 05-01-2010, 07:24 AM
flexmanta's Avatar
flexmanta flexmanta is offline
Senior Member
 
Join Date: Dec 2009
Location: Spain
Posts: 339
Re: what difference gray or BW and used: 50% contr

Im assuming by BW, the scanner software means duotone (as in, black and white and no grey inbetween). You want to avoid that if you don't want the letter to look stamped.

Scan in Gray-scale, and then boost contrast. When i said that you should scan in color, i didnt mean that you needed a color document. It's just better to let photoshop or whatever program you are using, see colors in order to make it's black and white conversion, i didn't know you were scanning just letters.
Reply With Quote top
Reply

  RetouchPRO > Technique > Photo Retouching


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fill or Opacity, what is the difference? STR81 Photo Retouching 3 03-25-2010 08:22 AM
Print mode settings grammaat46 Input/Output/Workflow 0 05-03-2009 01:21 AM
Stronger Overlay Blend Mode galvaros Photo Retouching 7 10-29-2008 09:43 AM
New mode of collage creation akvis AKVIS Support Forum 0 08-25-2008 05:37 AM
Using the Difference blend mode in Photo-based Art DannyRaphael Photo-Based Art 5 07-15-2002 12:44 PM


All times are GMT -6. The time now is 10:18 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2011, Crawlability, Inc.
Copyright © 2016 Doug Nelson. All Rights Reserved