42473

Adobe Photoshop 7 Manual

480
Zoom out
Zoom in
Previous page
1/549
Next page
Using Help | Contents | Index Back 480
Adobe Photoshop Help Printing (Photoshop)
Using Help | Contents | Index Back 480
About duotones
Duotones are used to increase the tonal range of a grayscale image. Although a grayscale
reproduction can display up to 256 levels of gray, a printing press can reproduce only
about 50 levels of gray per ink. This means that a grayscale image printed with only black
ink can look significantly coarser than the same image printed with two, three, or four inks,
each individual ink reproducing up to 50 levels of gray.
Sometimes duotones are printed using a black ink and a gray ink—the black for shadows
and the gray for midtones and highlights. More frequently, duotones are printed using a
colored ink for the highlight color. This technique produces an image with a slight tint to it
and significantly increases the image’s dynamic range. Duotones are ideal for two-color
print jobs with a spot color (such as a PANTONE Color) used for accent.
Because duotones use different color inks to reproduce different gray levels, they are
treated in Photoshop as single-channel, 8-bit, grayscale images. In Duotone mode, you do
not have direct access to the individual image channels (as in RGB, CMYK, and Lab modes).
Instead, you manipulate the channels through the curves in the Duotone Options
dialog box.
To convert an image to duotone:
1 Convert the image to grayscale by choosing Image > Mode > Grayscale. Only 8-bit
grayscale images can be converted to duotones.
2 Choose Image > Mode > Duotone.
3 In the Duotone Options dialog box, select Preview to view the effects of the duotone
settings on the image.
4 Select Monotone, Duotone, Tritone, or Quadtone for Type.
5 To specify ink colors, click the color box (the solid square) for an ink. Then use the color
picker or the Custom Colors dialog box to select an ink. (See “
Using the Adobe Color
Picker” on page 261.)
Note: To produce fully saturated colors, make sure that inks are specified in descending
order—darkest at the top, lightest at the bottom.
6 Click the curve box next to the color ink box and adjust the duotone curve for each ink
color. (See “
Modifying the duotone curve” on page 480.)
7 Set overprint colors, if necessary. (See “
Specifying overprint colors” on page 481.)
8 Click OK.
To apply a duotone effect to only part of an image, convert the duotone image to
Multichannel mode—this converts the duotone curves to spot channels. You can then
erase part of the spot channel for areas that you want printed as standard grayscale.
(See “Adding spot colors (Photoshop)” on page 272.)
Modifying the duotone curve
In a duotone image, each ink has a separate curve that specifies how the color is
distributed across the shadows and highlights. This curve maps each grayscale value in
the original image to a specific ink percentage.
To modify the duotone curve for a given ink:
1 To preview any adjustments, select the Preview option.
… 480 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Adobe Photoshop 7 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Adobe Photoshop 7 in the language / languages: English as an attachment in your email.

The manual is 13,48 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Adobe Photoshop 7

Adobe Photoshop 7 User Manual - English - 11 pages

Adobe Photoshop 7 User Manual - Dutch - 608 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info