Publishers of technology books, eBooks, and videos for creative people

Home > Articles > Adobe Photoshop > Technique

  • Print
  • + Share This
This chapter is from the book

This chapter is from the book

Respotting with the Clone Stamp

Step 18: After you sharpen any image, you should zoom in to at least 100% and then go through each section of the file, checking for spots that appeared after sharpening. Sharpening tends to enhance spots that may not have been obvious before, which is why you should double-check the spotting of your master file after any final sharpening. The procedure is the same as the spotting work demonstrated in Chapter 19: "Overall Color Correction." Do another File/Save (Command-S) to save your final spotted file.

Out-of-Gamut Colors

Step 19: You can see many vivid colors on the computer screen in RGB or Lab that won't print in CMYK on a press. If you are working in RGB to send your final output to a film recorder and color transparency film, you can get more colors on film than you can on a press. If your final output is some Web or multimedia presentation, you can also get the colors there. You need to realize that each different type of computer monitor or digital color printer, or even press and paper combination, usually has a different color gamut. The gamut of your output device is the range of colors it can actually print. For more information about these issues, see Chapter 14: "Color Spaces, Device Characterization, and Color Management." If you are going to print this file on a press in CMYK, or if you are using View/Proof Colors to soft proof RGB output devices, you might want to check your out-of-gamut colors and see if you need to correct them. This might be a good time to review the discussion of View/Proof Colors and View/Proof Setup in Chapter 15: "Photoshop Color Preferences, Monitor, Scanner, and Printer Calibration." Choose View/Proof Setup/Working CMYK for now as we go through this discussion. Now choose Select/Color Range, and then choose Out of Gamut from the Select pop-up at the top of the dialog box. Click OK to see a selection of all the colors that you can see in RGB, but which won't print exactly the same in CMYK or on your RGB device when Proof Setup is set to soft proof for an RGB output device. Choose View/Extras (Command-H) to hide the edges of this selection.

Figure 20.41Figure 20.41 Step 19: In Color Range, selecting out-of-gamut colors. Notice that we have set the Selection Preview to Grayscale so we see a large preview of the out-of-gamut colors in the image area behind the dialog. Play around with the other Selection Preview choices as you might find them useful.




Step 20: Some out-of-gamut colors, like red, often look quite different, and usually muted, when printed in CMYK. In many other colors, you might not notice the difference. Turn View/Proof Colors on (Command-Y) for an estimate of what the image will look like when printed in CMYK while you are still working in RGB or Lab. If you made the red barn really bright, you will notice it fades a bit. View/Proof Colors is on when there is a checkmark to the left of it in the menu bar. How many other changes did you see in the image? The sky might look a bit duller. Now choose View/Gamut Warning (Command-Shift-Y), and all these out-of-gamut colors will change to gray or whatever color you have set in Preferences as the gamut warning indicator. Remember that you have a selection, which you made using Color Range, of all the colors that are actually out-of-gamut. With Gamut Warning on, you can use this selection in conjunction with the Hue/Saturation command to fix much of the gamut problem. Colors often are out-of-gamut because they're too saturated. Choose Command-U for Hue/Saturation and move the Saturation slider to the left. Notice that the Gamut Warning areas get smaller the more you desaturate the selected out-of-gamut area. You might want to desaturate your out-of-gamut colors in several stages, or use the Sponge tool from the Tools palette, so you don't further desaturate colors that have already come back into gamut. To desaturate in stages, move the Saturation slider to the left, to –10. Choose OK and then choose Select/None. Now go back to Color Range (see step 19), and choose the new smaller set of out-of-gamut colors. Reduce the saturation on these, also, by –10. Continue this iterative process until you have no more out-of-gamut colors, or until the out-of-gamut areas are so small they won't show.

Step 21: Gamut Warning is a very useful tool for seeing colors that are going to be difficult to reproduce in CMYK, or on your RGB output device when soft proofing to an RGB device. However, if you always desaturate all your colors so that no Gamut Warning areas show up, you may end up with duller colors on press or your device than you would have gotten if you were a little less strict about desaturating all your RGB colors. I compared two conversions to CMYK of this image. The first had been pre-adjusted, via steps 19 and 20, to remove out-of-gamut colors, and the second was of the same image without the out-of-gamut adjustments. The pre-adjusted image didn't change much at all when converted to CMYK, which is good. The image that I hadn't pre-adjusted for out-of-gamut colors did change and got a little duller, as with the red barn, but overall was a bit brighter and more vivid in CMYK than the pre-adjusted image was. So if you work in RGB and use bright colors, even out-of-gamut ones, you might get brighter color results by going ahead and converting these to CMYK. You know that some bright colors may get a bit duller, but you can deal with those dull or changed colors when you are in CMYK mode, instead of dulling them ahead of time by desaturating based on Gamut Warning and possibly desaturating them too much. Do some tests to see what works best for you! When printing on an RGB device, like the LightJet 5000, you might find you lose a few less details in your extreme saturated areas if you bring things into gamut with the device a bit, before sending a file to the printer. Again, you should experiment and see.

  • + Share This
  • 🔖 Save To Your Account

Peachpit Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Peachpit and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Peachpit products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email ask@peachpit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by Adobe Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.peachpit.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020